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Finding the Fourth Proportional to 72,086.91, 108,181.40 and 25,343.43

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Solution

The fourth proportional to 72,086.91, 108,181.40 and 25,343.43 is: 38,033.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,086.91 : 108,181.40 = 25,343.43 : x
  2. Step 2: Convert to fraction form
    72,086.91/108,181.40 = 25,343.43/x
  3. Step 3: Cross multiply
    72,086.91x = 108,181.40 × 25,343.43
  4. Step 4: Simplify right side
    72,086.91x = 2,741,687,611.48
  5. Step 5: Solve for x
    x = 2,741,687,611.48/72,086.91
  6. Step 6: Final answer
    x = 38,033.09

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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.