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Finding the Fourth Proportional to 68,831.46, 103,234.86 and 18,230.82

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Solution

The fourth proportional to 68,831.46, 103,234.86 and 18,230.82 is: 27,342.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,831.46 : 103,234.86 = 18,230.82 : x
  2. Step 2: Convert to fraction form
    68,831.46/103,234.86 = 18,230.82/x
  3. Step 3: Cross multiply
    68,831.46x = 103,234.86 × 18,230.82
  4. Step 4: Simplify right side
    68,831.46x = 1,882,056,150.39
  5. Step 5: Solve for x
    x = 1,882,056,150.39/68,831.46
  6. Step 6: Final answer
    x = 27,342.96

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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.