Home / 80,581.75-111,205.82-48,321.62

Finding the Fourth Proportional to 80,581.75, 111,205.82 and 48,321.62

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Solution

The fourth proportional to 80,581.75, 111,205.82 and 48,321.62 is: 66,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,581.75 : 111,205.82 = 48,321.62 : x
  2. Step 2: Convert to fraction form
    80,581.75/111,205.82 = 48,321.62/x
  3. Step 3: Cross multiply
    80,581.75x = 111,205.82 × 48,321.62
  4. Step 4: Simplify right side
    80,581.75x = 5,373,646,012.63
  5. Step 5: Solve for x
    x = 5,373,646,012.63/80,581.75
  6. Step 6: Final answer
    x = 66,685.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.