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Finding the Fourth Proportional to 90,138.34, 135,207.78 and 33,963.27

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Solution

The fourth proportional to 90,138.34, 135,207.78 and 33,963.27 is: 50,945.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,138.34 : 135,207.78 = 33,963.27 : x
  2. Step 2: Convert to fraction form
    90,138.34/135,207.78 = 33,963.27/x
  3. Step 3: Cross multiply
    90,138.34x = 135,207.78 × 33,963.27
  4. Step 4: Simplify right side
    90,138.34x = 4,592,099,035.71
  5. Step 5: Solve for x
    x = 4,592,099,035.71/90,138.34
  6. Step 6: Final answer
    x = 50,945.01

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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.