Home / 83,456.18-115,170.09-45,731.78

Finding the Fourth Proportional to 83,456.18, 115,170.09 and 45,731.78

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Solution

The fourth proportional to 83,456.18, 115,170.09 and 45,731.78 is: 63,110.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,456.18 : 115,170.09 = 45,731.78 : x
  2. Step 2: Convert to fraction form
    83,456.18/115,170.09 = 45,731.78/x
  3. Step 3: Cross multiply
    83,456.18x = 115,170.09 × 45,731.78
  4. Step 4: Simplify right side
    83,456.18x = 5,266,933,218.46
  5. Step 5: Solve for x
    x = 5,266,933,218.46/83,456.18
  6. Step 6: Final answer
    x = 63,110.16

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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.