Finding the Fourth Proportional to 87,276,974.81, 120,557,193.87 and 64,691,134.02
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Solution
The fourth proportional to 87,276,974.81, 120,557,193.87 and 64,691,134.02 is: 89,358,981.60
Step by Step Solution
- Step 1: Write the proportion equation
87,276,974.81 : 120,557,193.87 = 64,691,134.02 : x - Step 2: Convert to fraction form
87,276,974.81/120,557,193.87 = 64,691,134.02/x - Step 3: Cross multiply
87,276,974.81x = 120,557,193.87 × 64,691,134.02 - Step 4: Simplify right side
87,276,974.81x = 7,798,981,585,719,293 - Step 5: Solve for x
x = 7,798,981,585,719,293/87,276,974.81 - Step 6: Final answer
x = 89,358,981.60
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.