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Finding the Fourth Proportional to 66,605,890.62, 99,915,689.46 and 25,141,691.87

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Solution

The fourth proportional to 66,605,890.62, 99,915,689.46 and 25,141,691.87 is: 37,715,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,605,890.62 : 99,915,689.46 = 25,141,691.87 : x
  2. Step 2: Convert to fraction form
    66,605,890.62/99,915,689.46 = 25,141,691.87/x
  3. Step 3: Cross multiply
    66,605,890.62x = 99,915,689.46 × 25,141,691.87
  4. Step 4: Simplify right side
    66,605,890.62x = 2,512,049,476,882,348
  5. Step 5: Solve for x
    x = 2,512,049,476,882,348/66,605,890.62
  6. Step 6: Final answer
    x = 37,715,124.80

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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.