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Finding the Fourth Proportional to 68,183.64, 94,062.96 and 39,876.84

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Solution

The fourth proportional to 68,183.64, 94,062.96 and 39,876.84 is: 55,012.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,183.64 : 94,062.96 = 39,876.84 : x
  2. Step 2: Convert to fraction form
    68,183.64/94,062.96 = 39,876.84/x
  3. Step 3: Cross multiply
    68,183.64x = 94,062.96 × 39,876.84
  4. Step 4: Simplify right side
    68,183.64x = 3,750,933,605.85
  5. Step 5: Solve for x
    x = 3,750,933,605.85/68,183.64
  6. Step 6: Final answer
    x = 55,012.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.