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Finding the Fourth Proportional to 68,896.58, 103,084.04 and 40,831.70

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Solution

The fourth proportional to 68,896.58, 103,084.04 and 40,831.70 is: 61,092.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,896.58 : 103,084.04 = 40,831.70 : x
  2. Step 2: Convert to fraction form
    68,896.58/103,084.04 = 40,831.70/x
  3. Step 3: Cross multiply
    68,896.58x = 103,084.04 × 40,831.70
  4. Step 4: Simplify right side
    68,896.58x = 4,209,096,182.73
  5. Step 5: Solve for x
    x = 4,209,096,182.73/68,896.58
  6. Step 6: Final answer
    x = 61,092.97

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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.