Home / 87,505.85-131,279.70-28,341.56

Finding the Fourth Proportional to 87,505.85, 131,279.70 and 28,341.56

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Solution

The fourth proportional to 87,505.85, 131,279.70 and 28,341.56 is: 42,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,505.85 : 131,279.70 = 28,341.56 : x
  2. Step 2: Convert to fraction form
    87,505.85/131,279.70 = 28,341.56/x
  3. Step 3: Cross multiply
    87,505.85x = 131,279.70 × 28,341.56
  4. Step 4: Simplify right side
    87,505.85x = 3,720,671,494.33
  5. Step 5: Solve for x
    x = 3,720,671,494.33/87,505.85
  6. Step 6: Final answer
    x = 42,519.12

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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.