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Finding the Fourth Proportional to 68,359.44, 102,546.48 and 28,920.54

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Solution

The fourth proportional to 68,359.44, 102,546.48 and 28,920.54 is: 43,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359.44 : 102,546.48 = 28,920.54 : x
  2. Step 2: Convert to fraction form
    68,359.44/102,546.48 = 28,920.54/x
  3. Step 3: Cross multiply
    68,359.44x = 102,546.48 × 28,920.54
  4. Step 4: Simplify right side
    68,359.44x = 2,965,699,576.70
  5. Step 5: Solve for x
    x = 2,965,699,576.70/68,359.44
  6. Step 6: Final answer
    x = 43,383.91

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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.