Home / 87,963.60-131,945.40-31,830.60

Finding the Fourth Proportional to 87,963.60, 131,945.40 and 31,830.60

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Solution

The fourth proportional to 87,963.60, 131,945.40 and 31,830.60 is: 47,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,963.60 : 131,945.40 = 31,830.60 : x
  2. Step 2: Convert to fraction form
    87,963.60/131,945.40 = 31,830.60/x
  3. Step 3: Cross multiply
    87,963.60x = 131,945.40 × 31,830.60
  4. Step 4: Simplify right side
    87,963.60x = 4,199,901,249.24
  5. Step 5: Solve for x
    x = 4,199,901,249.24/87,963.60
  6. Step 6: Final answer
    x = 47,745.90

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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.