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Finding the Fourth Proportional to 38,662.80, 57,907.80 and 29,869.20

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Solution

The fourth proportional to 38,662.80, 57,907.80 and 29,869.20 is: 44,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662.80 : 57,907.80 = 29,869.20 : x
  2. Step 2: Convert to fraction form
    38,662.80/57,907.80 = 29,869.20/x
  3. Step 3: Cross multiply
    38,662.80x = 57,907.80 × 29,869.20
  4. Step 4: Simplify right side
    38,662.80x = 1,729,659,659.76
  5. Step 5: Solve for x
    x = 1,729,659,659.76/38,662.80
  6. Step 6: Final answer
    x = 44,737.05

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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.