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Finding the Fourth Proportional to 43,877.60, 65,821.80 and 15,793.28

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Solution

The fourth proportional to 43,877.60, 65,821.80 and 15,793.28 is: 23,691.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,877.60 : 65,821.80 = 15,793.28 : x
  2. Step 2: Convert to fraction form
    43,877.60/65,821.80 = 15,793.28/x
  3. Step 3: Cross multiply
    43,877.60x = 65,821.80 × 15,793.28
  4. Step 4: Simplify right side
    43,877.60x = 1,039,542,117.50
  5. Step 5: Solve for x
    x = 1,039,542,117.50/43,877.60
  6. Step 6: Final answer
    x = 23,691.86

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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.