Home / 80,212.11-120,436.43-44,742.72

Finding the Fourth Proportional to 80,212.11, 120,436.43 and 44,742.72

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Solution

The fourth proportional to 80,212.11, 120,436.43 and 44,742.72 is: 67,180.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,212.11 : 120,436.43 = 44,742.72 : x
  2. Step 2: Convert to fraction form
    80,212.11/120,436.43 = 44,742.72/x
  3. Step 3: Cross multiply
    80,212.11x = 120,436.43 × 44,742.72
  4. Step 4: Simplify right side
    80,212.11x = 5,388,653,465.29
  5. Step 5: Solve for x
    x = 5,388,653,465.29/80,212.11
  6. Step 6: Final answer
    x = 67,180.05

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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.