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Finding the Fourth Proportional to 81,242.52, 121,818.50 and 25,066.68

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Solution

The fourth proportional to 81,242.52, 121,818.50 and 25,066.68 is: 37,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242.52 : 121,818.50 = 25,066.68 : x
  2. Step 2: Convert to fraction form
    81,242.52/121,818.50 = 25,066.68/x
  3. Step 3: Cross multiply
    81,242.52x = 121,818.50 × 25,066.68
  4. Step 4: Simplify right side
    81,242.52x = 3,053,585,357.58
  5. Step 5: Solve for x
    x = 3,053,585,357.58/81,242.52
  6. Step 6: Final answer
    x = 37,586.05

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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.