Home / 80,478.56-120,688.68-36,082.46

Finding the Fourth Proportional to 80,478.56, 120,688.68 and 36,082.46

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Solution

The fourth proportional to 80,478.56, 120,688.68 and 36,082.46 is: 54,110.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,478.56 : 120,688.68 = 36,082.46 : x
  2. Step 2: Convert to fraction form
    80,478.56/120,688.68 = 36,082.46/x
  3. Step 3: Cross multiply
    80,478.56x = 120,688.68 × 36,082.46
  4. Step 4: Simplify right side
    80,478.56x = 4,354,744,905.58
  5. Step 5: Solve for x
    x = 4,354,744,905.58/80,478.56
  6. Step 6: Final answer
    x = 54,110.62

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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.