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Finding the Fourth Proportional to 68,508.09, 102,692.08 and 38,863.31

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Solution

The fourth proportional to 68,508.09, 102,692.08 and 38,863.31 is: 58,255.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,508.09 : 102,692.08 = 38,863.31 : x
  2. Step 2: Convert to fraction form
    68,508.09/102,692.08 = 38,863.31/x
  3. Step 3: Cross multiply
    68,508.09x = 102,692.08 × 38,863.31
  4. Step 4: Simplify right side
    68,508.09x = 3,990,954,139.58
  5. Step 5: Solve for x
    x = 3,990,954,139.58/68,508.09
  6. Step 6: Final answer
    x = 58,255.22

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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.