Home / 87,640.38-131,467.86-28,474.74

Finding the Fourth Proportional to 87,640.38, 131,467.86 and 28,474.74

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Solution

The fourth proportional to 87,640.38, 131,467.86 and 28,474.74 is: 42,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,640.38 : 131,467.86 = 28,474.74 : x
  2. Step 2: Convert to fraction form
    87,640.38/131,467.86 = 28,474.74/x
  3. Step 3: Cross multiply
    87,640.38x = 131,467.86 × 28,474.74
  4. Step 4: Simplify right side
    87,640.38x = 3,743,513,131.86
  5. Step 5: Solve for x
    x = 3,743,513,131.86/87,640.38
  6. Step 6: Final answer
    x = 42,714.48

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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.