Home / 72,998.20-109,375.80-25,588.90

Finding the Fourth Proportional to 72,998.20, 109,375.80 and 25,588.90

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Solution

The fourth proportional to 72,998.20, 109,375.80 and 25,588.90 is: 38,340.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,998.20 : 109,375.80 = 25,588.90 : x
  2. Step 2: Convert to fraction form
    72,998.20/109,375.80 = 25,588.90/x
  3. Step 3: Cross multiply
    72,998.20x = 109,375.80 × 25,588.90
  4. Step 4: Simplify right side
    72,998.20x = 2,798,806,408.62
  5. Step 5: Solve for x
    x = 2,798,806,408.62/72,998.20
  6. Step 6: Final answer
    x = 38,340.76

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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.