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Finding the Fourth Proportional to 80,017.20, 110,454.84 and 71,619.12

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Solution

The fourth proportional to 80,017.20, 110,454.84 and 71,619.12 is: 98,862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,017.20 : 110,454.84 = 71,619.12 : x
  2. Step 2: Convert to fraction form
    80,017.20/110,454.84 = 71,619.12/x
  3. Step 3: Cross multiply
    80,017.20x = 110,454.84 × 71,619.12
  4. Step 4: Simplify right side
    80,017.20x = 7,910,678,440.54
  5. Step 5: Solve for x
    x = 7,910,678,440.54/80,017.20
  6. Step 6: Final answer
    x = 98,862.23

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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.