54 is what percent of 90? Choose matching definition 60% 70% 80% 50%

To find what percent 54 is of 90, we can set up a proportion:<br /><br />\[<br />\frac{54}{90} = \frac{x}{100}<br />\]<br /><br />where \( x \) is the percentage we are trying to find.<br /><br />First, we simplify the fraction on the left side:<br /><br />\[<br />\frac{54}{90} = \frac{3}{5}<br />\]<br /><br />Now we have:<br /><br />\[<br />\frac{3}{5} = \frac{x}{100}<br />\]<br /><br />Next, we solve for \( x \) by cross-multiplying:<br /><br />\[<br />3 \times 100 = 5 \times x<br />\]<br /><br />\[<br />300 = 5x<br />\]<br /><br />Finally, we divide both sides by 5 to isolate \( x \):<br /><br />\[<br />x = \frac{300}{5} = 60<br />\]<br /><br />So, 54 is \( 60\% \) of 90.<br /><br />The correct answer is \( 60\% \).