Home / 80,910.20-111,707.96-52,242.68

Finding the Fourth Proportional to 80,910.20, 111,707.96 and 52,242.68

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Solution

The fourth proportional to 80,910.20, 111,707.96 and 52,242.68 is: 72,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,910.20 : 111,707.96 = 52,242.68 : x
  2. Step 2: Convert to fraction form
    80,910.20/111,707.96 = 52,242.68/x
  3. Step 3: Cross multiply
    80,910.20x = 111,707.96 × 52,242.68
  4. Step 4: Simplify right side
    80,910.20x = 5,835,923,207.73
  5. Step 5: Solve for x
    x = 5,835,923,207.73/80,910.20
  6. Step 6: Final answer
    x = 72,128.40

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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.