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Finding the Fourth Proportional to 71,759.97, 99,025.38 and 39,493.53

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Solution

The fourth proportional to 71,759.97, 99,025.38 and 39,493.53 is: 54,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,759.97 : 99,025.38 = 39,493.53 : x
  2. Step 2: Convert to fraction form
    71,759.97/99,025.38 = 39,493.53/x
  3. Step 3: Cross multiply
    71,759.97x = 99,025.38 × 39,493.53
  4. Step 4: Simplify right side
    71,759.97x = 3,910,861,815.79
  5. Step 5: Solve for x
    x = 3,910,861,815.79/71,759.97
  6. Step 6: Final answer
    x = 54,499.21

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1.5x scale

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.