Home / 80,673.12-111,265.92-55,194.66

Finding the Fourth Proportional to 80,673.12, 111,265.92 and 55,194.66

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Solution

The fourth proportional to 80,673.12, 111,265.92 and 55,194.66 is: 76,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,673.12 : 111,265.92 = 55,194.66 : x
  2. Step 2: Convert to fraction form
    80,673.12/111,265.92 = 55,194.66/x
  3. Step 3: Cross multiply
    80,673.12x = 111,265.92 × 55,194.66
  4. Step 4: Simplify right side
    80,673.12x = 6,141,284,623.99
  5. Step 5: Solve for x
    x = 6,141,284,623.99/80,673.12
  6. Step 6: Final answer
    x = 76,125.54

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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.