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Finding the Fourth Proportional to 38,604.40, 57,809.40 and 25,385.20

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Solution

The fourth proportional to 38,604.40, 57,809.40 and 25,385.20 is: 38,013.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,604.40 : 57,809.40 = 25,385.20 : x
  2. Step 2: Convert to fraction form
    38,604.40/57,809.40 = 25,385.20/x
  3. Step 3: Cross multiply
    38,604.40x = 57,809.40 × 25,385.20
  4. Step 4: Simplify right side
    38,604.40x = 1,467,503,180.88
  5. Step 5: Solve for x
    x = 1,467,503,180.88/38,604.40
  6. Step 6: Final answer
    x = 38,013.88

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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.