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Finding the Fourth Proportional to 90,663.92, 135,995.88 and 28,334.96

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Solution

The fourth proportional to 90,663.92, 135,995.88 and 28,334.96 is: 42,502.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,663.92 : 135,995.88 = 28,334.96 : x
  2. Step 2: Convert to fraction form
    90,663.92/135,995.88 = 28,334.96/x
  3. Step 3: Cross multiply
    90,663.92x = 135,995.88 × 28,334.96
  4. Step 4: Simplify right side
    90,663.92x = 3,853,437,819.96
  5. Step 5: Solve for x
    x = 3,853,437,819.96/90,663.92
  6. Step 6: Final answer
    x = 42,502.44

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Double scale
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Similar ratio
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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.