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Finding the Fourth Proportional to 67,080.20, 100,620.30 and 60,081.80

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Solution

The fourth proportional to 67,080.20, 100,620.30 and 60,081.80 is: 90,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,080.20 : 100,620.30 = 60,081.80 : x
  2. Step 2: Convert to fraction form
    67,080.20/100,620.30 = 60,081.80/x
  3. Step 3: Cross multiply
    67,080.20x = 100,620.30 × 60,081.80
  4. Step 4: Simplify right side
    67,080.20x = 6,045,448,740.54
  5. Step 5: Solve for x
    x = 6,045,448,740.54/67,080.20
  6. Step 6: Final answer
    x = 90,122.70

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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.