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Finding the Fourth Proportional to 90,663.92, 135,857.35 and 38,044.70

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Solution

The fourth proportional to 90,663.92, 135,857.35 and 38,044.70 is: 57,008.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,663.92 : 135,857.35 = 38,044.70 : x
  2. Step 2: Convert to fraction form
    90,663.92/135,857.35 = 38,044.70/x
  3. Step 3: Cross multiply
    90,663.92x = 135,857.35 × 38,044.70
  4. Step 4: Simplify right side
    90,663.92x = 5,168,652,123.55
  5. Step 5: Solve for x
    x = 5,168,652,123.55/90,663.92
  6. Step 6: Final answer
    x = 57,008.92

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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.