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Finding the Fourth Proportional to 81,499.11, 122,248.00 and 25,339.11

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Solution

The fourth proportional to 81,499.11, 122,248.00 and 25,339.11 is: 38,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,499.11 : 122,248.00 = 25,339.11 : x
  2. Step 2: Convert to fraction form
    81,499.11/122,248.00 = 25,339.11/x
  3. Step 3: Cross multiply
    81,499.11x = 122,248.00 × 25,339.11
  4. Step 4: Simplify right side
    81,499.11x = 3,097,655,780.17
  5. Step 5: Solve for x
    x = 3,097,655,780.17/81,499.11
  6. Step 6: Final answer
    x = 38,008.46

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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.