Home / 90,179.28-135,291.18-27,849.78

Finding the Fourth Proportional to 90,179.28, 135,291.18 and 27,849.78

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Solution

The fourth proportional to 90,179.28, 135,291.18 and 27,849.78 is: 41,781.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,179.28 : 135,291.18 = 27,849.78 : x
  2. Step 2: Convert to fraction form
    90,179.28/135,291.18 = 27,849.78/x
  3. Step 3: Cross multiply
    90,179.28x = 135,291.18 × 27,849.78
  4. Step 4: Simplify right side
    90,179.28x = 3,767,829,598.94
  5. Step 5: Solve for x
    x = 3,767,829,598.94/90,179.28
  6. Step 6: Final answer
    x = 41,781.54

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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.