Home / 80,988.06-111,734.78-54,147.54

Finding the Fourth Proportional to 80,988.06, 111,734.78 and 54,147.54

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Solution

The fourth proportional to 80,988.06, 111,734.78 and 54,147.54 is: 74,704.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,988.06 : 111,734.78 = 54,147.54 : x
  2. Step 2: Convert to fraction form
    80,988.06/111,734.78 = 54,147.54/x
  3. Step 3: Cross multiply
    80,988.06x = 111,734.78 × 54,147.54
  4. Step 4: Simplify right side
    80,988.06x = 6,050,163,469.44
  5. Step 5: Solve for x
    x = 6,050,163,469.44/80,988.06
  6. Step 6: Final answer
    x = 74,704.39

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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.