Home / 80,286.56-120,433.68-38,768.48

Finding the Fourth Proportional to 80,286.56, 120,433.68 and 38,768.48

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Solution

The fourth proportional to 80,286.56, 120,433.68 and 38,768.48 is: 58,154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,286.56 : 120,433.68 = 38,768.48 : x
  2. Step 2: Convert to fraction form
    80,286.56/120,433.68 = 38,768.48/x
  3. Step 3: Cross multiply
    80,286.56x = 120,433.68 × 38,768.48
  4. Step 4: Simplify right side
    80,286.56x = 4,669,030,714.41
  5. Step 5: Solve for x
    x = 4,669,030,714.41/80,286.56
  6. Step 6: Final answer
    x = 58,154.57

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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.