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Finding the Fourth Proportional to 68,372.10, 102,497.31 and 36,799.20

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Solution

The fourth proportional to 68,372.10, 102,497.31 and 36,799.20 is: 55,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,372.10 : 102,497.31 = 36,799.20 : x
  2. Step 2: Convert to fraction form
    68,372.10/102,497.31 = 36,799.20/x
  3. Step 3: Cross multiply
    68,372.10x = 102,497.31 × 36,799.20
  4. Step 4: Simplify right side
    68,372.10x = 3,771,819,010.15
  5. Step 5: Solve for x
    x = 3,771,819,010.15/68,372.10
  6. Step 6: Final answer
    x = 55,166.05

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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.