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Finding the Fourth Proportional to 68,388.20, 102,611.10 and 37,245.80

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Solution

The fourth proportional to 68,388.20, 102,611.10 and 37,245.80 is: 55,884.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,388.20 : 102,611.10 = 37,245.80 : x
  2. Step 2: Convert to fraction form
    68,388.20/102,611.10 = 37,245.80/x
  3. Step 3: Cross multiply
    68,388.20x = 102,611.10 × 37,245.80
  4. Step 4: Simplify right side
    68,388.20x = 3,821,832,508.38
  5. Step 5: Solve for x
    x = 3,821,832,508.38/68,388.20
  6. Step 6: Final answer
    x = 55,884.39

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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.