Home / 80,631.62-120,958.38-28,034.30

Finding the Fourth Proportional to 80,631.62, 120,958.38 and 28,034.30

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Solution

The fourth proportional to 80,631.62, 120,958.38 and 28,034.30 is: 42,055.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631.62 : 120,958.38 = 28,034.30 : x
  2. Step 2: Convert to fraction form
    80,631.62/120,958.38 = 28,034.30/x
  3. Step 3: Cross multiply
    80,631.62x = 120,958.38 × 28,034.30
  4. Step 4: Simplify right side
    80,631.62x = 3,390,983,512.43
  5. Step 5: Solve for x
    x = 3,390,983,512.43/80,631.62
  6. Step 6: Final answer
    x = 42,055.26

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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.