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Finding the Fourth Proportional to 72,181.94, 108,261.97 and 25,423.88

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Solution

The fourth proportional to 72,181.94, 108,261.97 and 25,423.88 is: 38,131.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,181.94 : 108,261.97 = 25,423.88 : x
  2. Step 2: Convert to fraction form
    72,181.94/108,261.97 = 25,423.88/x
  3. Step 3: Cross multiply
    72,181.94x = 108,261.97 × 25,423.88
  4. Step 4: Simplify right side
    72,181.94x = 2,752,438,728.97
  5. Step 5: Solve for x
    x = 2,752,438,728.97/72,181.94
  6. Step 6: Final answer
    x = 38,131.96

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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.