Home / 87,410.20-131,115.30-28,247.80

Finding the Fourth Proportional to 87,410.20, 131,115.30 and 28,247.80

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Solution

The fourth proportional to 87,410.20, 131,115.30 and 28,247.80 is: 42,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,410.20 : 131,115.30 = 28,247.80 : x
  2. Step 2: Convert to fraction form
    87,410.20/131,115.30 = 28,247.80/x
  3. Step 3: Cross multiply
    87,410.20x = 131,115.30 × 28,247.80
  4. Step 4: Simplify right side
    87,410.20x = 3,703,718,771.34
  5. Step 5: Solve for x
    x = 3,703,718,771.34/87,410.20
  6. Step 6: Final answer
    x = 42,371.70

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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.