Home / 80,621.33-120,899.18-36,236.16

Finding the Fourth Proportional to 80,621.33, 120,899.18 and 36,236.16

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Solution

The fourth proportional to 80,621.33, 120,899.18 and 36,236.16 is: 54,339.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,621.33 : 120,899.18 = 36,236.16 : x
  2. Step 2: Convert to fraction form
    80,621.33/120,899.18 = 36,236.16/x
  3. Step 3: Cross multiply
    80,621.33x = 120,899.18 × 36,236.16
  4. Step 4: Simplify right side
    80,621.33x = 4,380,922,120.94
  5. Step 5: Solve for x
    x = 4,380,922,120.94/80,621.33
  6. Step 6: Final answer
    x = 54,339.50

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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.