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Finding the Fourth Proportional to 90,393.54, 135,589.62 and 27,213.36

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Solution

The fourth proportional to 90,393.54, 135,589.62 and 27,213.36 is: 40,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,393.54 : 135,589.62 = 27,213.36 : x
  2. Step 2: Convert to fraction form
    90,393.54/135,589.62 = 27,213.36/x
  3. Step 3: Cross multiply
    90,393.54x = 135,589.62 × 27,213.36
  4. Step 4: Simplify right side
    90,393.54x = 3,689,849,141.32
  5. Step 5: Solve for x
    x = 3,689,849,141.32/90,393.54
  6. Step 6: Final answer
    x = 40,819.83

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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.