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Finding the Fourth Proportional to 68,671.80, 102,936.68 and 39,025.80

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Solution

The fourth proportional to 68,671.80, 102,936.68 and 39,025.80 is: 58,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,671.80 : 102,936.68 = 39,025.80 : x
  2. Step 2: Convert to fraction form
    68,671.80/102,936.68 = 39,025.80/x
  3. Step 3: Cross multiply
    68,671.80x = 102,936.68 × 39,025.80
  4. Step 4: Simplify right side
    68,671.80x = 4,017,186,286.34
  5. Step 5: Solve for x
    x = 4,017,186,286.34/68,671.80
  6. Step 6: Final answer
    x = 58,498.34

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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.