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Finding the Fourth Proportional to 38,636.80, 57,868.80 and 29,843.20

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Solution

The fourth proportional to 38,636.80, 57,868.80 and 29,843.20 is: 44,698.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,636.80 : 57,868.80 = 29,843.20 : x
  2. Step 2: Convert to fraction form
    38,636.80/57,868.80 = 29,843.20/x
  3. Step 3: Cross multiply
    38,636.80x = 57,868.80 × 29,843.20
  4. Step 4: Simplify right side
    38,636.80x = 1,726,990,172.16
  5. Step 5: Solve for x
    x = 1,726,990,172.16/38,636.80
  6. Step 6: Final answer
    x = 44,698.06

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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.