Home / 80,531.49-111,091.40-54,680.92

Finding the Fourth Proportional to 80,531.49, 111,091.40 and 54,680.92

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Solution

The fourth proportional to 80,531.49, 111,091.40 and 54,680.92 is: 75,431.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531.49 : 111,091.40 = 54,680.92 : x
  2. Step 2: Convert to fraction form
    80,531.49/111,091.40 = 54,680.92/x
  3. Step 3: Cross multiply
    80,531.49x = 111,091.40 × 54,680.92
  4. Step 4: Simplify right side
    80,531.49x = 6,074,580,234.90
  5. Step 5: Solve for x
    x = 6,074,580,234.90/80,531.49
  6. Step 6: Final answer
    x = 75,431.12

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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.