Home / 80,796.15-121,117.55-28,191.51

Finding the Fourth Proportional to 80,796.15, 121,117.55 and 28,191.51

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Solution

The fourth proportional to 80,796.15, 121,117.55 and 28,191.51 is: 42,260.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,796.15 : 121,117.55 = 28,191.51 : x
  2. Step 2: Convert to fraction form
    80,796.15/121,117.55 = 28,191.51/x
  3. Step 3: Cross multiply
    80,796.15x = 121,117.55 × 28,191.51
  4. Step 4: Simplify right side
    80,796.15x = 3,414,486,481.04
  5. Step 5: Solve for x
    x = 3,414,486,481.04/80,796.15
  6. Step 6: Final answer
    x = 42,260.51

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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.