Home / 57,768.20-86,660.40-18,321.20

Finding the Fourth Proportional to 57,768.20, 86,660.40 and 18,321.20

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Solution

The fourth proportional to 57,768.20, 86,660.40 and 18,321.20 is: 27,484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,768.20 : 86,660.40 = 18,321.20 : x
  2. Step 2: Convert to fraction form
    57,768.20/86,660.40 = 18,321.20/x
  3. Step 3: Cross multiply
    57,768.20x = 86,660.40 × 18,321.20
  4. Step 4: Simplify right side
    57,768.20x = 1,587,722,520.48
  5. Step 5: Solve for x
    x = 1,587,722,520.48/57,768.20
  6. Step 6: Final answer
    x = 27,484.37

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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.