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Finding the Fourth Proportional to 68,107.86, 93,974.04 and 39,800.52

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Solution

The fourth proportional to 68,107.86, 93,974.04 and 39,800.52 is: 54,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,107.86 : 93,974.04 = 39,800.52 : x
  2. Step 2: Convert to fraction form
    68,107.86/93,974.04 = 39,800.52/x
  3. Step 3: Cross multiply
    68,107.86x = 93,974.04 × 39,800.52
  4. Step 4: Simplify right side
    68,107.86x = 3,740,215,658.50
  5. Step 5: Solve for x
    x = 3,740,215,658.50/68,107.86
  6. Step 6: Final answer
    x = 54,916.06

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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.