Home / 87,819.83-131,729.20-28,655.54

Finding the Fourth Proportional to 87,819.83, 131,729.20 and 28,655.54

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Solution

The fourth proportional to 87,819.83, 131,729.20 and 28,655.54 is: 42,983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,819.83 : 131,729.20 = 28,655.54 : x
  2. Step 2: Convert to fraction form
    87,819.83/131,729.20 = 28,655.54/x
  3. Step 3: Cross multiply
    87,819.83x = 131,729.20 × 28,655.54
  4. Step 4: Simplify right side
    87,819.83x = 3,774,770,629.48
  5. Step 5: Solve for x
    x = 3,774,770,629.48/87,819.83
  6. Step 6: Final answer
    x = 42,983.13

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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.