Home / 87,769.56-131,629.20-28,610.40

Finding the Fourth Proportional to 87,769.56, 131,629.20 and 28,610.40

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Solution

The fourth proportional to 87,769.56, 131,629.20 and 28,610.40 is: 42,907.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,769.56 : 131,629.20 = 28,610.40 : x
  2. Step 2: Convert to fraction form
    87,769.56/131,629.20 = 28,610.40/x
  3. Step 3: Cross multiply
    87,769.56x = 131,629.20 × 28,610.40
  4. Step 4: Simplify right side
    87,769.56x = 3,765,964,063.68
  5. Step 5: Solve for x
    x = 3,765,964,063.68/87,769.56
  6. Step 6: Final answer
    x = 42,907.41

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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.