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Finding the Fourth Proportional to 76,915.60, 115,385.60 and 32,542.69

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Solution

The fourth proportional to 76,915.60, 115,385.60 and 32,542.69 is: 48,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,915.60 : 115,385.60 = 32,542.69 : x
  2. Step 2: Convert to fraction form
    76,915.60/115,385.60 = 32,542.69/x
  3. Step 3: Cross multiply
    76,915.60x = 115,385.60 × 32,542.69
  4. Step 4: Simplify right side
    76,915.60x = 3,754,957,604.16
  5. Step 5: Solve for x
    x = 3,754,957,604.16/76,915.60
  6. Step 6: Final answer
    x = 48,819.19

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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.