Home / 90,761.32-136,003.38-38,142.04

Finding the Fourth Proportional to 90,761.32, 136,003.38 and 38,142.04

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Solution

The fourth proportional to 90,761.32, 136,003.38 and 38,142.04 is: 57,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,761.32 : 136,003.38 = 38,142.04 : x
  2. Step 2: Convert to fraction form
    90,761.32/136,003.38 = 38,142.04/x
  3. Step 3: Cross multiply
    90,761.32x = 136,003.38 × 38,142.04
  4. Step 4: Simplify right side
    90,761.32x = 5,187,446,360.10
  5. Step 5: Solve for x
    x = 5,187,446,360.10/90,761.32
  6. Step 6: Final answer
    x = 57,154.81

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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.