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Finding the Fourth Proportional to 87,380.80, 131,071.20 and 59,732.80

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Solution

The fourth proportional to 87,380.80, 131,071.20 and 59,732.80 is: 89,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,380.80 : 131,071.20 = 59,732.80 : x
  2. Step 2: Convert to fraction form
    87,380.80/131,071.20 = 59,732.80/x
  3. Step 3: Cross multiply
    87,380.80x = 131,071.20 × 59,732.80
  4. Step 4: Simplify right side
    87,380.80x = 7,829,249,775.36
  5. Step 5: Solve for x
    x = 7,829,249,775.36/87,380.80
  6. Step 6: Final answer
    x = 89,599.20

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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.