Home / 87,517.10-131,434.05-76,630.70

Finding the Fourth Proportional to 87,517.10, 131,434.05 and 76,630.70

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Solution

The fourth proportional to 87,517.10, 131,434.05 and 76,630.70 is: 115,084.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,517.10 : 131,434.05 = 76,630.70 : x
  2. Step 2: Convert to fraction form
    87,517.10/131,434.05 = 76,630.70/x
  3. Step 3: Cross multiply
    87,517.10x = 131,434.05 × 76,630.70
  4. Step 4: Simplify right side
    87,517.10x = 10,071,883,255.34
  5. Step 5: Solve for x
    x = 10,071,883,255.34/87,517.10
  6. Step 6: Final answer
    x = 115,084.75

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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.