Home / 81,383.20-121,920.49-48,003.91

Finding the Fourth Proportional to 81,383.20, 121,920.49 and 48,003.91

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Solution

The fourth proportional to 81,383.20, 121,920.49 and 48,003.91 is: 71,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,383.20 : 121,920.49 = 48,003.91 : x
  2. Step 2: Convert to fraction form
    81,383.20/121,920.49 = 48,003.91/x
  3. Step 3: Cross multiply
    81,383.20x = 121,920.49 × 48,003.91
  4. Step 4: Simplify right side
    81,383.20x = 5,852,660,229.12
  5. Step 5: Solve for x
    x = 5,852,660,229.12/81,383.20
  6. Step 6: Final answer
    x = 71,914.85

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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.