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Finding the Fourth Proportional to 68,676.64, 102,884.20 and 39,114.88

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Solution

The fourth proportional to 68,676.64, 102,884.20 and 39,114.88 is: 58,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,676.64 : 102,884.20 = 39,114.88 : x
  2. Step 2: Convert to fraction form
    68,676.64/102,884.20 = 39,114.88/x
  3. Step 3: Cross multiply
    68,676.64x = 102,884.20 × 39,114.88
  4. Step 4: Simplify right side
    68,676.64x = 4,024,303,136.90
  5. Step 5: Solve for x
    x = 4,024,303,136.90/68,676.64
  6. Step 6: Final answer
    x = 58,597.85

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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.