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Finding the Fourth Proportional to 68,511.75, 102,831.68 and 34,801.89

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Solution

The fourth proportional to 68,511.75, 102,831.68 and 34,801.89 is: 52,235.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,511.75 : 102,831.68 = 34,801.89 : x
  2. Step 2: Convert to fraction form
    68,511.75/102,831.68 = 34,801.89/x
  3. Step 3: Cross multiply
    68,511.75x = 102,831.68 × 34,801.89
  4. Step 4: Simplify right side
    68,511.75x = 3,578,736,815.88
  5. Step 5: Solve for x
    x = 3,578,736,815.88/68,511.75
  6. Step 6: Final answer
    x = 52,235.37

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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.