Home / 87,079.20-130,521.60-49,657.20

Finding the Fourth Proportional to 87,079.20, 130,521.60 and 49,657.20

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Solution

The fourth proportional to 87,079.20, 130,521.60 and 49,657.20 is: 74,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,079.20 : 130,521.60 = 49,657.20 : x
  2. Step 2: Convert to fraction form
    87,079.20/130,521.60 = 49,657.20/x
  3. Step 3: Cross multiply
    87,079.20x = 130,521.60 × 49,657.20
  4. Step 4: Simplify right side
    87,079.20x = 6,481,337,195.52
  5. Step 5: Solve for x
    x = 6,481,337,195.52/87,079.20
  6. Step 6: Final answer
    x = 74,430.37

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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.