Home / 87,437.76-131,127.36-28,257.44

Finding the Fourth Proportional to 87,437.76, 131,127.36 and 28,257.44

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Solution

The fourth proportional to 87,437.76, 131,127.36 and 28,257.44 is: 42,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,437.76 : 131,127.36 = 28,257.44 : x
  2. Step 2: Convert to fraction form
    87,437.76/131,127.36 = 28,257.44/x
  3. Step 3: Cross multiply
    87,437.76x = 131,127.36 × 28,257.44
  4. Step 4: Simplify right side
    87,437.76x = 3,705,323,507.56
  5. Step 5: Solve for x
    x = 3,705,323,507.56/87,437.76
  6. Step 6: Final answer
    x = 42,376.70

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1.5x scale

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.