Home / 87,351.81-130,995.42-31,176.87

Finding the Fourth Proportional to 87,351.81, 130,995.42 and 31,176.87

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Solution

The fourth proportional to 87,351.81, 130,995.42 and 31,176.87 is: 46,753.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,351.81 : 130,995.42 = 31,176.87 : x
  2. Step 2: Convert to fraction form
    87,351.81/130,995.42 = 31,176.87/x
  3. Step 3: Cross multiply
    87,351.81x = 130,995.42 × 31,176.87
  4. Step 4: Simplify right side
    87,351.81x = 4,084,027,179.94
  5. Step 5: Solve for x
    x = 4,084,027,179.94/87,351.81
  6. Step 6: Final answer
    x = 46,753.78

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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.