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Finding the Fourth Proportional to 63,982,691.12, 88,306,671.84 and 39,216,654.20

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Solution

The fourth proportional to 63,982,691.12, 88,306,671.84 and 39,216,654.20 is: 54,125,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,982,691.12 : 88,306,671.84 = 39,216,654.20 : x
  2. Step 2: Convert to fraction form
    63,982,691.12/88,306,671.84 = 39,216,654.20/x
  3. Step 3: Cross multiply
    63,982,691.12x = 88,306,671.84 × 39,216,654.20
  4. Step 4: Simplify right side
    63,982,691.12x = 3,463,092,213,102,158
  5. Step 5: Solve for x
    x = 3,463,092,213,102,158/63,982,691.12
  6. Step 6: Final answer
    x = 54,125,454.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.