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Finding the Fourth Proportional to 80,460.62, 120,588.79 and 36,085.58

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Solution

The fourth proportional to 80,460.62, 120,588.79 and 36,085.58 is: 54,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,460.62 : 120,588.79 = 36,085.58 : x
  2. Step 2: Convert to fraction form
    80,460.62/120,588.79 = 36,085.58/x
  3. Step 3: Cross multiply
    80,460.62x = 120,588.79 × 36,085.58
  4. Step 4: Simplify right side
    80,460.62x = 4,351,516,428.65
  5. Step 5: Solve for x
    x = 4,351,516,428.65/80,460.62
  6. Step 6: Final answer
    x = 54,082.56

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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.