Home / 80,863.75-121,135.18-38,110.65

Finding the Fourth Proportional to 80,863.75, 121,135.18 and 38,110.65

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Solution

The fourth proportional to 80,863.75, 121,135.18 and 38,110.65 is: 57,090.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,863.75 : 121,135.18 = 38,110.65 : x
  2. Step 2: Convert to fraction form
    80,863.75/121,135.18 = 38,110.65/x
  3. Step 3: Cross multiply
    80,863.75x = 121,135.18 × 38,110.65
  4. Step 4: Simplify right side
    80,863.75x = 4,616,540,447.67
  5. Step 5: Solve for x
    x = 4,616,540,447.67/80,863.75
  6. Step 6: Final answer
    x = 57,090.36

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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.