Home / 80,759.96-121,138.84-28,169.24

Finding the Fourth Proportional to 80,759.96, 121,138.84 and 28,169.24

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Solution

The fourth proportional to 80,759.96, 121,138.84 and 28,169.24 is: 42,253.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,759.96 : 121,138.84 = 28,169.24 : x
  2. Step 2: Convert to fraction form
    80,759.96/121,138.84 = 28,169.24/x
  3. Step 3: Cross multiply
    80,759.96x = 121,138.84 × 28,169.24
  4. Step 4: Simplify right side
    80,759.96x = 3,412,389,057.28
  5. Step 5: Solve for x
    x = 3,412,389,057.28/80,759.96
  6. Step 6: Final answer
    x = 42,253.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.