Home / 80,578.05-120,835.81-27,255.79

Finding the Fourth Proportional to 80,578.05, 120,835.81 and 27,255.79

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Solution

The fourth proportional to 80,578.05, 120,835.81 and 27,255.79 is: 40,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,578.05 : 120,835.81 = 27,255.79 : x
  2. Step 2: Convert to fraction form
    80,578.05/120,835.81 = 27,255.79/x
  3. Step 3: Cross multiply
    80,578.05x = 120,835.81 × 27,255.79
  4. Step 4: Simplify right side
    80,578.05x = 3,293,474,721.38
  5. Step 5: Solve for x
    x = 3,293,474,721.38/80,578.05
  6. Step 6: Final answer
    x = 40,873.10

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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.