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Finding the Fourth Proportional to 81,392.58, 122,092.11 and 25,238.52

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Solution

The fourth proportional to 81,392.58, 122,092.11 and 25,238.52 is: 37,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392.58 : 122,092.11 = 25,238.52 : x
  2. Step 2: Convert to fraction form
    81,392.58/122,092.11 = 25,238.52/x
  3. Step 3: Cross multiply
    81,392.58x = 122,092.11 × 25,238.52
  4. Step 4: Simplify right side
    81,392.58x = 3,081,424,160.08
  5. Step 5: Solve for x
    x = 3,081,424,160.08/81,392.58
  6. Step 6: Final answer
    x = 37,858.78

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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.