Home / 87,805.32-131,721.60-28,627.20

Finding the Fourth Proportional to 87,805.32, 131,721.60 and 28,627.20

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Solution

The fourth proportional to 87,805.32, 131,721.60 and 28,627.20 is: 42,945.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,805.32 : 131,721.60 = 28,627.20 : x
  2. Step 2: Convert to fraction form
    87,805.32/131,721.60 = 28,627.20/x
  3. Step 3: Cross multiply
    87,805.32x = 131,721.60 × 28,627.20
  4. Step 4: Simplify right side
    87,805.32x = 3,770,820,587.52
  5. Step 5: Solve for x
    x = 3,770,820,587.52/87,805.32
  6. Step 6: Final answer
    x = 42,945.24

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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.