Home / 80,660.72-111,295.40-47,120.24

Finding the Fourth Proportional to 80,660.72, 111,295.40 and 47,120.24

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Solution

The fourth proportional to 80,660.72, 111,295.40 and 47,120.24 is: 65,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.72 : 111,295.40 = 47,120.24 : x
  2. Step 2: Convert to fraction form
    80,660.72/111,295.40 = 47,120.24/x
  3. Step 3: Cross multiply
    80,660.72x = 111,295.40 × 47,120.24
  4. Step 4: Simplify right side
    80,660.72x = 5,244,265,958.90
  5. Step 5: Solve for x
    x = 5,244,265,958.90/80,660.72
  6. Step 6: Final answer
    x = 65,016.35

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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.