Home / 87,768.05-131,665.74-28,589.96

Finding the Fourth Proportional to 87,768.05, 131,665.74 and 28,589.96

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Solution

The fourth proportional to 87,768.05, 131,665.74 and 28,589.96 is: 42,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,768.05 : 131,665.74 = 28,589.96 : x
  2. Step 2: Convert to fraction form
    87,768.05/131,665.74 = 28,589.96/x
  3. Step 3: Cross multiply
    87,768.05x = 131,665.74 × 28,589.96
  4. Step 4: Simplify right side
    87,768.05x = 3,764,318,239.97
  5. Step 5: Solve for x
    x = 3,764,318,239.97/87,768.05
  6. Step 6: Final answer
    x = 42,889.39

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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.