Finding the Fourth Proportional to 77,292,059.20, 115,938,013.92 and 19,784,237.92
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Solution
The fourth proportional to 77,292,059.20, 115,938,013.92 and 19,784,237.92 is: 29,676,337.71
Step by Step Solution
- Step 1: Write the proportion equation
77,292,059.20 : 115,938,013.92 = 19,784,237.92 : x - Step 2: Convert to fraction form
77,292,059.20/115,938,013.92 = 19,784,237.92/x - Step 3: Cross multiply
77,292,059.20x = 115,938,013.92 × 19,784,237.92 - Step 4: Simplify right side
77,292,059.20x = 2,293,745,251,365,552 - Step 5: Solve for x
x = 2,293,745,251,365,552/77,292,059.20 - Step 6: Final answer
x = 29,676,337.71
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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.