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Finding the Fourth Proportional to 68,805.10, 103,108.82 and 29,351.62

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Solution

The fourth proportional to 68,805.10, 103,108.82 and 29,351.62 is: 43,985.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,805.10 : 103,108.82 = 29,351.62 : x
  2. Step 2: Convert to fraction form
    68,805.10/103,108.82 = 29,351.62/x
  3. Step 3: Cross multiply
    68,805.10x = 103,108.82 × 29,351.62
  4. Step 4: Simplify right side
    68,805.10x = 3,026,410,903.29
  5. Step 5: Solve for x
    x = 3,026,410,903.29/68,805.10
  6. Step 6: Final answer
    x = 43,985.27

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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.