Home / 87,145.20-130,761-34,553.52

Finding the Fourth Proportional to 87,145.20, 130,761 and 34,553.52

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Solution

The fourth proportional to 87,145.20, 130,761 and 34,553.52 is: 51,847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,145.20 : 130,761 = 34,553.52 : x
  2. Step 2: Convert to fraction form
    87,145.20/130,761 = 34,553.52/x
  3. Step 3: Cross multiply
    87,145.20x = 130,761 × 34,553.52
  4. Step 4: Simplify right side
    87,145.20x = 4,518,252,828.72
  5. Step 5: Solve for x
    x = 4,518,252,828.72/87,145.20
  6. Step 6: Final answer
    x = 51,847.41

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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.