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Finding the Fourth Proportional to 68,672.70, 103,009.05 and 29,231.10

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Solution

The fourth proportional to 68,672.70, 103,009.05 and 29,231.10 is: 43,846.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,672.70 : 103,009.05 = 29,231.10 : x
  2. Step 2: Convert to fraction form
    68,672.70/103,009.05 = 29,231.10/x
  3. Step 3: Cross multiply
    68,672.70x = 103,009.05 × 29,231.10
  4. Step 4: Simplify right side
    68,672.70x = 3,011,067,841.46
  5. Step 5: Solve for x
    x = 3,011,067,841.46/68,672.70
  6. Step 6: Final answer
    x = 43,846.65

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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.