Home / 80,211.91-120,436.15-44,742.53

Finding the Fourth Proportional to 80,211.91, 120,436.15 and 44,742.53

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Solution

The fourth proportional to 80,211.91, 120,436.15 and 44,742.53 is: 67,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.91 : 120,436.15 = 44,742.53 : x
  2. Step 2: Convert to fraction form
    80,211.91/120,436.15 = 44,742.53/x
  3. Step 3: Cross multiply
    80,211.91x = 120,436.15 × 44,742.53
  4. Step 4: Simplify right side
    80,211.91x = 5,388,618,054.46
  5. Step 5: Solve for x
    x = 5,388,618,054.46/80,211.91
  6. Step 6: Final answer
    x = 67,179.77

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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.