Home / 80,471.13-111,015.45-48,621.57

Finding the Fourth Proportional to 80,471.13, 111,015.45 and 48,621.57

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Solution

The fourth proportional to 80,471.13, 111,015.45 and 48,621.57 is: 67,076.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,471.13 : 111,015.45 = 48,621.57 : x
  2. Step 2: Convert to fraction form
    80,471.13/111,015.45 = 48,621.57/x
  3. Step 3: Cross multiply
    80,471.13x = 111,015.45 × 48,621.57
  4. Step 4: Simplify right side
    80,471.13x = 5,397,745,473.26
  5. Step 5: Solve for x
    x = 5,397,745,473.26/80,471.13
  6. Step 6: Final answer
    x = 67,076.79

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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.