Home / 87,121.80-130,707.52-42,761.88

Finding the Fourth Proportional to 87,121.80, 130,707.52 and 42,761.88

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Solution

The fourth proportional to 87,121.80, 130,707.52 and 42,761.88 is: 64,155.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,121.80 : 130,707.52 = 42,761.88 : x
  2. Step 2: Convert to fraction form
    87,121.80/130,707.52 = 42,761.88/x
  3. Step 3: Cross multiply
    87,121.80x = 130,707.52 × 42,761.88
  4. Step 4: Simplify right side
    87,121.80x = 5,589,299,285.34
  5. Step 5: Solve for x
    x = 5,589,299,285.34/87,121.80
  6. Step 6: Final answer
    x = 64,155.00

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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.