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Finding the Fourth Proportional to 74,681,792.96, 111,958,793.88 and 28,656,691.04

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Solution

The fourth proportional to 74,681,792.96, 111,958,793.88 and 28,656,691.04 is: 42,960,518.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,681,792.96 : 111,958,793.88 = 28,656,691.04 : x
  2. Step 2: Convert to fraction form
    74,681,792.96/111,958,793.88 = 28,656,691.04/x
  3. Step 3: Cross multiply
    74,681,792.96x = 111,958,793.88 × 28,656,691.04
  4. Step 4: Simplify right side
    74,681,792.96x = 3,208,368,565,430,202.50
  5. Step 5: Solve for x
    x = 3,208,368,565,430,202.50/74,681,792.96
  6. Step 6: Final answer
    x = 42,960,518.73

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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.