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Finding the Fourth Proportional to 68,430.72, 102,652.56 and 26,868

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Solution

The fourth proportional to 68,430.72, 102,652.56 and 26,868 is: 40,304.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,430.72 : 102,652.56 = 26,868 : x
  2. Step 2: Convert to fraction form
    68,430.72/102,652.56 = 26,868/x
  3. Step 3: Cross multiply
    68,430.72x = 102,652.56 × 26,868
  4. Step 4: Simplify right side
    68,430.72x = 2,758,068,982.08
  5. Step 5: Solve for x
    x = 2,758,068,982.08/68,430.72
  6. Step 6: Final answer
    x = 40,304.54

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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.