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Finding the Fourth Proportional to 57,383.20, 86,139.60 and 44,293.60

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Solution

The fourth proportional to 57,383.20, 86,139.60 and 44,293.60 is: 66,490.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,383.20 : 86,139.60 = 44,293.60 : x
  2. Step 2: Convert to fraction form
    57,383.20/86,139.60 = 44,293.60/x
  3. Step 3: Cross multiply
    57,383.20x = 86,139.60 × 44,293.60
  4. Step 4: Simplify right side
    57,383.20x = 3,815,432,986.56
  5. Step 5: Solve for x
    x = 3,815,432,986.56/57,383.20
  6. Step 6: Final answer
    x = 66,490.42

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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.