The Federal Reserve announced Wednesday it will raise its key interest rate by 0.75% as it seeks to fight sky-high inflation.

It's the second time in a row the Fed has raised rates by three-quarters of a percentage point, and the fourth rate hike this year. The reason for the hikes: Prices of goods and services are climbing at the highest rate in four decades. Last month, they surged more than 9% compared with June of last year.

By raising interest rates, the Fed is hoping to reduce overall demand in the economy, which in turn should slow down price growth.

In its statement Wednesday, the Fed said there are signs the rate increases are working.

"Recent indicators of spending and production have softened," the bank said, adding that, at the same time, job gains are robust and the unemployment rate is low, despite inflation.

The Fed also cited Russia’s war against Ukraine as a key source of inflation, while suppressing overall global economic activity.

Fed Chair Powell addresses interest rate increase, 'strongly committed' to reducing inflation

July 27, 202200:57

While many individual households are struggling, U.S. consumers still have approximately $2 trillion in savings from the pandemic in aggregate, PNC chief economist Gus Faucher said. Combined with a stable base of employment, those savings have allowed households to withstand much of the inflationary environment, he said.

Still, it is not clear whether the Fed will be able to accomplish the balancing act of lowering price growth while avoiding broader economic damage. Many economists are now worried about both the inflation rate, which has reached a four-decade high, and gross domestic product, which could show that the U.S. economy has contracted for two-consecutive quarters — the technical definition of a recession. Thursday, the Bureau of Labor Statistics will release the latest GDP figures.

Even though some economists use GDP to gauge whether the economy is in a "technical" recession, only the National Bureau of Economic Research, a private, nonpartisan group, has the power to officially make such a declaration.

In a note to clients on Friday, Chris Williamson, chief business economist at S&P Global Market Intelligence, wrote that U.S. output is falling at a rate not seen since 2009, excluding pandemic months.

“Manufacturing has stalled and the service sector’s rebound from the pandemic has gone into reverse, as the tailwind of pent-up demand has been overcome by the rising cost of living, higher interest rates and growing gloom about the economic outlook,” he said.