Home / 87,085.38-130,287.86-76,471.14

Finding the Fourth Proportional to 87,085.38, 130,287.86 and 76,471.14

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Solution

The fourth proportional to 87,085.38, 130,287.86 and 76,471.14 is: 114,407.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,085.38 : 130,287.86 = 76,471.14 : x
  2. Step 2: Convert to fraction form
    87,085.38/130,287.86 = 76,471.14/x
  3. Step 3: Cross multiply
    87,085.38x = 130,287.86 × 76,471.14
  4. Step 4: Simplify right side
    87,085.38x = 9,963,261,182.36
  5. Step 5: Solve for x
    x = 9,963,261,182.36/87,085.38
  6. Step 6: Final answer
    x = 114,407.97

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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.