Finding the Fourth Proportional to 19,779,085.80, 29,668,628.70 and 19,424,791.80
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Solution
The fourth proportional to 19,779,085.80, 29,668,628.70 and 19,424,791.80 is: 29,137,187.70
Step by Step Solution
- Step 1: Write the proportion equation
19,779,085.80 : 29,668,628.70 = 19,424,791.80 : x - Step 2: Convert to fraction form
19,779,085.80/29,668,628.70 = 19,424,791.80/x - Step 3: Cross multiply
19,779,085.80x = 29,668,628.70 × 19,424,791.80 - Step 4: Simplify right side
19,779,085.80x = 576,306,935,489,004.62 - Step 5: Solve for x
x = 576,306,935,489,004.62/19,779,085.80 - Step 6: Final answer
x = 29,137,187.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.