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Finding the Fourth Proportional to 68,236.27, 102,411.92 and 28,821.67

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Solution

The fourth proportional to 68,236.27, 102,411.92 and 28,821.67 is: 43,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,236.27 : 102,411.92 = 28,821.67 : x
  2. Step 2: Convert to fraction form
    68,236.27/102,411.92 = 28,821.67/x
  3. Step 3: Cross multiply
    68,236.27x = 102,411.92 × 28,821.67
  4. Step 4: Simplify right side
    68,236.27x = 2,951,682,418.20
  5. Step 5: Solve for x
    x = 2,951,682,418.20/68,236.27
  6. Step 6: Final answer
    x = 43,256.80

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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.