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Finding the Fourth Proportional to 81,246.55, 121,824.79 and 33,248.87

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Solution

The fourth proportional to 81,246.55, 121,824.79 and 33,248.87 is: 49,854.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,246.55 : 121,824.79 = 33,248.87 : x
  2. Step 2: Convert to fraction form
    81,246.55/121,824.79 = 33,248.87/x
  3. Step 3: Cross multiply
    81,246.55x = 121,824.79 × 33,248.87
  4. Step 4: Simplify right side
    81,246.55x = 4,050,536,605.49
  5. Step 5: Solve for x
    x = 4,050,536,605.49/81,246.55
  6. Step 6: Final answer
    x = 49,854.88

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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.