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Finding the Fourth Proportional to 60,885, 91,247.31 and 25,781.22

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Solution

The fourth proportional to 60,885, 91,247.31 and 25,781.22 is: 38,637.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,885 : 91,247.31 = 25,781.22 : x
  2. Step 2: Convert to fraction form
    60,885/91,247.31 = 25,781.22/x
  3. Step 3: Cross multiply
    60,885x = 91,247.31 × 25,781.22
  4. Step 4: Simplify right side
    60,885x = 2,352,466,973.52
  5. Step 5: Solve for x
    x = 2,352,466,973.52/60,885
  6. Step 6: Final answer
    x = 38,637.87

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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.