Home / 87,061.20-130,332.60-51,982.80

Finding the Fourth Proportional to 87,061.20, 130,332.60 and 51,982.80

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Solution

The fourth proportional to 87,061.20, 130,332.60 and 51,982.80 is: 77,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,061.20 : 130,332.60 = 51,982.80 : x
  2. Step 2: Convert to fraction form
    87,061.20/130,332.60 = 51,982.80/x
  3. Step 3: Cross multiply
    87,061.20x = 130,332.60 × 51,982.80
  4. Step 4: Simplify right side
    87,061.20x = 6,775,053,479.28
  5. Step 5: Solve for x
    x = 6,775,053,479.28/87,061.20
  6. Step 6: Final answer
    x = 77,819.44

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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.