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Finding the Fourth Proportional to 87,680.80, 131,449.20 and 37,799.20

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Solution

The fourth proportional to 87,680.80, 131,449.20 and 37,799.20 is: 56,667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.80 : 131,449.20 = 37,799.20 : x
  2. Step 2: Convert to fraction form
    87,680.80/131,449.20 = 37,799.20/x
  3. Step 3: Cross multiply
    87,680.80x = 131,449.20 × 37,799.20
  4. Step 4: Simplify right side
    87,680.80x = 4,968,674,600.64
  5. Step 5: Solve for x
    x = 4,968,674,600.64/87,680.80
  6. Step 6: Final answer
    x = 56,667.76

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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.