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Finding the Fourth Proportional to 90,562.70, 135,863.22 and 27,387.56

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Solution

The fourth proportional to 90,562.70, 135,863.22 and 27,387.56 is: 41,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,562.70 : 135,863.22 = 27,387.56 : x
  2. Step 2: Convert to fraction form
    90,562.70/135,863.22 = 27,387.56/x
  3. Step 3: Cross multiply
    90,562.70x = 135,863.22 × 27,387.56
  4. Step 4: Simplify right side
    90,562.70x = 3,720,962,089.54
  5. Step 5: Solve for x
    x = 3,720,962,089.54/90,562.70
  6. Step 6: Final answer
    x = 41,087.14

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1.5x scale

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.