Finding the Fourth Proportional to 91,207,881.15, 136,812,707.46 and 72,966,760.53
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Solution
The fourth proportional to 91,207,881.15, 136,812,707.46 and 72,966,760.53 is: 109,450,849.39
Step by Step Solution
- Step 1: Write the proportion equation
91,207,881.15 : 136,812,707.46 = 72,966,760.53 : x - Step 2: Convert to fraction form
91,207,881.15/136,812,707.46 = 72,966,760.53/x - Step 3: Cross multiply
91,207,881.15x = 136,812,707.46 × 72,966,760.53 - Step 4: Simplify right side
91,207,881.15x = 9,982,780,062,694,766 - Step 5: Solve for x
x = 9,982,780,062,694,766/91,207,881.15 - Step 6: Final answer
x = 109,450,849.39
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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.