Home / 87,856.80-131,793.29-28,692.78

Finding the Fourth Proportional to 87,856.80, 131,793.29 and 28,692.78

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Solution

The fourth proportional to 87,856.80, 131,793.29 and 28,692.78 is: 43,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.80 : 131,793.29 = 28,692.78 : x
  2. Step 2: Convert to fraction form
    87,856.80/131,793.29 = 28,692.78/x
  3. Step 3: Cross multiply
    87,856.80x = 131,793.29 × 28,692.78
  4. Step 4: Simplify right side
    87,856.80x = 3,781,515,731.98
  5. Step 5: Solve for x
    x = 3,781,515,731.98/87,856.80
  6. Step 6: Final answer
    x = 43,041.81

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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.