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Finding the Fourth Proportional to 66,368,001.20, 99,552,001.80 and 52,931,073.20

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Solution

The fourth proportional to 66,368,001.20, 99,552,001.80 and 52,931,073.20 is: 79,396,609.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,368,001.20 : 99,552,001.80 = 52,931,073.20 : x
  2. Step 2: Convert to fraction form
    66,368,001.20/99,552,001.80 = 52,931,073.20/x
  3. Step 3: Cross multiply
    66,368,001.20x = 99,552,001.80 × 52,931,073.20
  4. Step 4: Simplify right side
    66,368,001.20x = 5,269,394,294,482,332
  5. Step 5: Solve for x
    x = 5,269,394,294,482,332/66,368,001.20
  6. Step 6: Final answer
    x = 79,396,609.80

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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.