Finding the Fourth Proportional to 81,131,701.53, 121,616,359.61 and 40,221,078.11
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Solution
The fourth proportional to 81,131,701.53, 121,616,359.61 and 40,221,078.11 is: 60,291,365.84
Step by Step Solution
- Step 1: Write the proportion equation
81,131,701.53 : 121,616,359.61 = 40,221,078.11 : x - Step 2: Convert to fraction form
81,131,701.53/121,616,359.61 = 40,221,078.11/x - Step 3: Cross multiply
81,131,701.53x = 121,616,359.61 × 40,221,078.11 - Step 4: Simplify right side
81,131,701.53x = 4,891,541,098,518,472 - Step 5: Solve for x
x = 4,891,541,098,518,472/81,131,701.53 - Step 6: Final answer
x = 60,291,365.84
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.