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Finding the Fourth Proportional to 38,404.80, 57,553.20 and 30,520.80

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Solution

The fourth proportional to 38,404.80, 57,553.20 and 30,520.80 is: 45,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,404.80 : 57,553.20 = 30,520.80 : x
  2. Step 2: Convert to fraction form
    38,404.80/57,553.20 = 30,520.80/x
  3. Step 3: Cross multiply
    38,404.80x = 57,553.20 × 30,520.80
  4. Step 4: Simplify right side
    38,404.80x = 1,756,569,706.56
  5. Step 5: Solve for x
    x = 1,756,569,706.56/38,404.80
  6. Step 6: Final answer
    x = 45,738.29

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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.