Home / 83,412.81-115,108.38-47,601.90

Finding the Fourth Proportional to 83,412.81, 115,108.38 and 47,601.90

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Solution

The fourth proportional to 83,412.81, 115,108.38 and 47,601.90 is: 65,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,412.81 : 115,108.38 = 47,601.90 : x
  2. Step 2: Convert to fraction form
    83,412.81/115,108.38 = 47,601.90/x
  3. Step 3: Cross multiply
    83,412.81x = 115,108.38 × 47,601.90
  4. Step 4: Simplify right side
    83,412.81x = 5,479,377,593.92
  5. Step 5: Solve for x
    x = 5,479,377,593.92/83,412.81
  6. Step 6: Final answer
    x = 65,689.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.