Home / 87,251.22-130,915.71-45,688.50

Finding the Fourth Proportional to 87,251.22, 130,915.71 and 45,688.50

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Solution

The fourth proportional to 87,251.22, 130,915.71 and 45,688.50 is: 68,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,251.22 : 130,915.71 = 45,688.50 : x
  2. Step 2: Convert to fraction form
    87,251.22/130,915.71 = 45,688.50/x
  3. Step 3: Cross multiply
    87,251.22x = 130,915.71 × 45,688.50
  4. Step 4: Simplify right side
    87,251.22x = 5,981,342,416.34
  5. Step 5: Solve for x
    x = 5,981,342,416.34/87,251.22
  6. Step 6: Final answer
    x = 68,553.11

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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.