Home / 80,565.41-111,183.42-55,125.13

Finding the Fourth Proportional to 80,565.41, 111,183.42 and 55,125.13

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Solution

The fourth proportional to 80,565.41, 111,183.42 and 55,125.13 is: 76,074.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,565.41 : 111,183.42 = 55,125.13 : x
  2. Step 2: Convert to fraction form
    80,565.41/111,183.42 = 55,125.13/x
  3. Step 3: Cross multiply
    80,565.41x = 111,183.42 × 55,125.13
  4. Step 4: Simplify right side
    80,565.41x = 6,129,000,481.34
  5. Step 5: Solve for x
    x = 6,129,000,481.34/80,565.41
  6. Step 6: Final answer
    x = 76,074.84

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1.5x scale

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.