Home / 57,786.48-86,691.60-18,342.72

Finding the Fourth Proportional to 57,786.48, 86,691.60 and 18,342.72

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Solution

The fourth proportional to 57,786.48, 86,691.60 and 18,342.72 is: 27,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,786.48 : 86,691.60 = 18,342.72 : x
  2. Step 2: Convert to fraction form
    57,786.48/86,691.60 = 18,342.72/x
  3. Step 3: Cross multiply
    57,786.48x = 86,691.60 × 18,342.72
  4. Step 4: Simplify right side
    57,786.48x = 1,590,159,745.15
  5. Step 5: Solve for x
    x = 1,590,159,745.15/57,786.48
  6. Step 6: Final answer
    x = 27,517.85

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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.