Home / 84,641.13-126,951.31-49,121.78

Finding the Fourth Proportional to 84,641.13, 126,951.31 and 49,121.78

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Solution

The fourth proportional to 84,641.13, 126,951.31 and 49,121.78 is: 73,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,641.13 : 126,951.31 = 49,121.78 : x
  2. Step 2: Convert to fraction form
    84,641.13/126,951.31 = 49,121.78/x
  3. Step 3: Cross multiply
    84,641.13x = 126,951.31 × 49,121.78
  4. Step 4: Simplify right side
    84,641.13x = 6,236,073,747.18
  5. Step 5: Solve for x
    x = 6,236,073,747.18/84,641.13
  6. Step 6: Final answer
    x = 73,676.64

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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.