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Finding the Fourth Proportional to 68,540.69, 102,812.79 and 32,508.72

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Solution

The fourth proportional to 68,540.69, 102,812.79 and 32,508.72 is: 48,763.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,540.69 : 102,812.79 = 32,508.72 : x
  2. Step 2: Convert to fraction form
    68,540.69/102,812.79 = 32,508.72/x
  3. Step 3: Cross multiply
    68,540.69x = 102,812.79 × 32,508.72
  4. Step 4: Simplify right side
    68,540.69x = 3,342,312,202.53
  5. Step 5: Solve for x
    x = 3,342,312,202.53/68,540.69
  6. Step 6: Final answer
    x = 48,763.92

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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.