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Finding the Fourth Proportional to 38,480.80, 57,721.20 and 35,600.80

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Solution

The fourth proportional to 38,480.80, 57,721.20 and 35,600.80 is: 53,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.80 : 57,721.20 = 35,600.80 : x
  2. Step 2: Convert to fraction form
    38,480.80/57,721.20 = 35,600.80/x
  3. Step 3: Cross multiply
    38,480.80x = 57,721.20 × 35,600.80
  4. Step 4: Simplify right side
    38,480.80x = 2,054,920,896.96
  5. Step 5: Solve for x
    x = 2,054,920,896.96/38,480.80
  6. Step 6: Final answer
    x = 53,401.20

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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.