Home / 40,115.18-55,384.16-25,781.42

Finding the Fourth Proportional to 40,115.18, 55,384.16 and 25,781.42

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Solution

The fourth proportional to 40,115.18, 55,384.16 and 25,781.42 is: 35,594.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,115.18 : 55,384.16 = 25,781.42 : x
  2. Step 2: Convert to fraction form
    40,115.18/55,384.16 = 25,781.42/x
  3. Step 3: Cross multiply
    40,115.18x = 55,384.16 × 25,781.42
  4. Step 4: Simplify right side
    40,115.18x = 1,427,882,299.86
  5. Step 5: Solve for x
    x = 1,427,882,299.86/40,115.18
  6. Step 6: Final answer
    x = 35,594.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.