Home / 87,571.53-131,375.75-28,402.59

Finding the Fourth Proportional to 87,571.53, 131,375.75 and 28,402.59

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Solution

The fourth proportional to 87,571.53, 131,375.75 and 28,402.59 is: 42,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,571.53 : 131,375.75 = 28,402.59 : x
  2. Step 2: Convert to fraction form
    87,571.53/131,375.75 = 28,402.59/x
  3. Step 3: Cross multiply
    87,571.53x = 131,375.75 × 28,402.59
  4. Step 4: Simplify right side
    87,571.53x = 3,731,412,126.86
  5. Step 5: Solve for x
    x = 3,731,412,126.86/87,571.53
  6. Step 6: Final answer
    x = 42,609.88

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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.