Home / 71,939.68-107,921.04-30,387.04

Finding the Fourth Proportional to 71,939.68, 107,921.04 and 30,387.04

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Solution

The fourth proportional to 71,939.68, 107,921.04 and 30,387.04 is: 45,585.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,939.68 : 107,921.04 = 30,387.04 : x
  2. Step 2: Convert to fraction form
    71,939.68/107,921.04 = 30,387.04/x
  3. Step 3: Cross multiply
    71,939.68x = 107,921.04 × 30,387.04
  4. Step 4: Simplify right side
    71,939.68x = 3,279,400,959.32
  5. Step 5: Solve for x
    x = 3,279,400,959.32/71,939.68
  6. Step 6: Final answer
    x = 45,585.43

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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.