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Finding the Fourth Proportional to 81,154.52, 121,744.85 and 24,994.61

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Solution

The fourth proportional to 81,154.52, 121,744.85 and 24,994.61 is: 37,495.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,154.52 : 121,744.85 = 24,994.61 : x
  2. Step 2: Convert to fraction form
    81,154.52/121,744.85 = 24,994.61/x
  3. Step 3: Cross multiply
    81,154.52x = 121,744.85 × 24,994.61
  4. Step 4: Simplify right side
    81,154.52x = 3,042,964,468.08
  5. Step 5: Solve for x
    x = 3,042,964,468.08/81,154.52
  6. Step 6: Final answer
    x = 37,495.94

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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.