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Finding the Fourth Proportional to 68,676.44, 103,016.46 and 21,929.30

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Solution

The fourth proportional to 68,676.44, 103,016.46 and 21,929.30 is: 32,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,676.44 : 103,016.46 = 21,929.30 : x
  2. Step 2: Convert to fraction form
    68,676.44/103,016.46 = 21,929.30/x
  3. Step 3: Cross multiply
    68,676.44x = 103,016.46 × 21,929.30
  4. Step 4: Simplify right side
    68,676.44x = 2,259,078,856.28
  5. Step 5: Solve for x
    x = 2,259,078,856.28/68,676.44
  6. Step 6: Final answer
    x = 32,894.52

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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.