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Finding the Fourth Proportional to 68,704.70, 102,827.42 and 39,114.59

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Solution

The fourth proportional to 68,704.70, 102,827.42 and 39,114.59 is: 58,541.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,704.70 : 102,827.42 = 39,114.59 : x
  2. Step 2: Convert to fraction form
    68,704.70/102,827.42 = 39,114.59/x
  3. Step 3: Cross multiply
    68,704.70x = 102,827.42 × 39,114.59
  4. Step 4: Simplify right side
    68,704.70x = 4,022,052,178.48
  5. Step 5: Solve for x
    x = 4,022,052,178.48/68,704.70
  6. Step 6: Final answer
    x = 58,541.15

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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.