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Finding the Fourth Proportional to 87,777, 131,665.50 and 25,448.04

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Solution

The fourth proportional to 87,777, 131,665.50 and 25,448.04 is: 38,172.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,777 : 131,665.50 = 25,448.04 : x
  2. Step 2: Convert to fraction form
    87,777/131,665.50 = 25,448.04/x
  3. Step 3: Cross multiply
    87,777x = 131,665.50 × 25,448.04
  4. Step 4: Simplify right side
    87,777x = 3,350,628,910.62
  5. Step 5: Solve for x
    x = 3,350,628,910.62/87,777
  6. Step 6: Final answer
    x = 38,172.06

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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.