Home / 81,100.11-121,676.19-38,983.25

Finding the Fourth Proportional to 81,100.11, 121,676.19 and 38,983.25

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Solution

The fourth proportional to 81,100.11, 121,676.19 and 38,983.25 is: 58,487.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,100.11 : 121,676.19 = 38,983.25 : x
  2. Step 2: Convert to fraction form
    81,100.11/121,676.19 = 38,983.25/x
  3. Step 3: Cross multiply
    81,100.11x = 121,676.19 × 38,983.25
  4. Step 4: Simplify right side
    81,100.11x = 4,743,332,725.44
  5. Step 5: Solve for x
    x = 4,743,332,725.44/81,100.11
  6. Step 6: Final answer
    x = 58,487.38

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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.