Home / 81,200.66-121,769.78-27,882.72

Finding the Fourth Proportional to 81,200.66, 121,769.78 and 27,882.72

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Solution

The fourth proportional to 81,200.66, 121,769.78 and 27,882.72 is: 41,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,200.66 : 121,769.78 = 27,882.72 : x
  2. Step 2: Convert to fraction form
    81,200.66/121,769.78 = 27,882.72/x
  3. Step 3: Cross multiply
    81,200.66x = 121,769.78 × 27,882.72
  4. Step 4: Simplify right side
    81,200.66x = 3,395,272,540.79
  5. Step 5: Solve for x
    x = 3,395,272,540.79/81,200.66
  6. Step 6: Final answer
    x = 41,813.36

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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.