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Finding the Fourth Proportional to 68,375,793.90, 102,563,690.85 and 19,853,553.90

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Solution

The fourth proportional to 68,375,793.90, 102,563,690.85 and 19,853,553.90 is: 29,780,330.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,375,793.90 : 102,563,690.85 = 19,853,553.90 : x
  2. Step 2: Convert to fraction form
    68,375,793.90/102,563,690.85 = 19,853,553.90/x
  3. Step 3: Cross multiply
    68,375,793.90x = 102,563,690.85 × 19,853,553.90
  4. Step 4: Simplify right side
    68,375,793.90x = 2,036,253,764,473,411.50
  5. Step 5: Solve for x
    x = 2,036,253,764,473,411.50/68,375,793.90
  6. Step 6: Final answer
    x = 29,780,330.85

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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.