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Finding the Fourth Proportional to 68,452.20, 102,755.10 and 52,938.60

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Solution

The fourth proportional to 68,452.20, 102,755.10 and 52,938.60 is: 79,467.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,452.20 : 102,755.10 = 52,938.60 : x
  2. Step 2: Convert to fraction form
    68,452.20/102,755.10 = 52,938.60/x
  3. Step 3: Cross multiply
    68,452.20x = 102,755.10 × 52,938.60
  4. Step 4: Simplify right side
    68,452.20x = 5,439,711,136.86
  5. Step 5: Solve for x
    x = 5,439,711,136.86/68,452.20
  6. Step 6: Final answer
    x = 79,467.29

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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.