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Finding the Fourth Proportional to 38,512.70, 57,769.05 and 36,981.80

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Solution

The fourth proportional to 38,512.70, 57,769.05 and 36,981.80 is: 55,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.70 : 57,769.05 = 36,981.80 : x
  2. Step 2: Convert to fraction form
    38,512.70/57,769.05 = 36,981.80/x
  3. Step 3: Cross multiply
    38,512.70x = 57,769.05 × 36,981.80
  4. Step 4: Simplify right side
    38,512.70x = 2,136,403,453.29
  5. Step 5: Solve for x
    x = 2,136,403,453.29/38,512.70
  6. Step 6: Final answer
    x = 55,472.70

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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.