Home / 90,419.38-135,610.54-34,240.12

Finding the Fourth Proportional to 90,419.38, 135,610.54 and 34,240.12

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Solution

The fourth proportional to 90,419.38, 135,610.54 and 34,240.12 is: 51,353.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,419.38 : 135,610.54 = 34,240.12 : x
  2. Step 2: Convert to fraction form
    90,419.38/135,610.54 = 34,240.12/x
  3. Step 3: Cross multiply
    90,419.38x = 135,610.54 × 34,240.12
  4. Step 4: Simplify right side
    90,419.38x = 4,643,320,738.24
  5. Step 5: Solve for x
    x = 4,643,320,738.24/90,419.38
  6. Step 6: Final answer
    x = 51,353.16

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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.