Finding the Fourth Proportional to 81,167,934.80, 121,750,128.61 and 19,757,417.67
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Solution
The fourth proportional to 81,167,934.80, 121,750,128.61 and 19,757,417.67 is: 29,635,694.79
Step by Step Solution
- Step 1: Write the proportion equation
81,167,934.80 : 121,750,128.61 = 19,757,417.67 : x - Step 2: Convert to fraction form
81,167,934.80/121,750,128.61 = 19,757,417.67/x - Step 3: Cross multiply
81,167,934.80x = 121,750,128.61 × 19,757,417.67 - Step 4: Simplify right side
81,167,934.80x = 2,405,468,142,274,593 - Step 5: Solve for x
x = 2,405,468,142,274,593/81,167,934.80 - Step 6: Final answer
x = 29,635,694.79
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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.