Home / 83,901.31-115,781.62-45,661.61

Finding the Fourth Proportional to 83,901.31, 115,781.62 and 45,661.61

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Solution

The fourth proportional to 83,901.31, 115,781.62 and 45,661.61 is: 63,011.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,901.31 : 115,781.62 = 45,661.61 : x
  2. Step 2: Convert to fraction form
    83,901.31/115,781.62 = 45,661.61/x
  3. Step 3: Cross multiply
    83,901.31x = 115,781.62 × 45,661.61
  4. Step 4: Simplify right side
    83,901.31x = 5,286,775,177.61
  5. Step 5: Solve for x
    x = 5,286,775,177.61/83,901.31
  6. Step 6: Final answer
    x = 63,011.83

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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.