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Finding the Fourth Proportional to 66,442,697.90, 99,664,046.85 and 48,526,793.90

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Solution

The fourth proportional to 66,442,697.90, 99,664,046.85 and 48,526,793.90 is: 72,790,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442,697.90 : 99,664,046.85 = 48,526,793.90 : x
  2. Step 2: Convert to fraction form
    66,442,697.90/99,664,046.85 = 48,526,793.90/x
  3. Step 3: Cross multiply
    66,442,697.90x = 99,664,046.85 × 48,526,793.90
  4. Step 4: Simplify right side
    66,442,697.90x = 4,836,376,660,729,894
  5. Step 5: Solve for x
    x = 4,836,376,660,729,894/66,442,697.90
  6. Step 6: Final answer
    x = 72,790,190.85

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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.