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Finding the Fourth Proportional to 68,914.71, 103,171.23 and 51,223.73

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Solution

The fourth proportional to 68,914.71, 103,171.23 and 51,223.73 is: 76,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,914.71 : 103,171.23 = 51,223.73 : x
  2. Step 2: Convert to fraction form
    68,914.71/103,171.23 = 51,223.73/x
  3. Step 3: Cross multiply
    68,914.71x = 103,171.23 × 51,223.73
  4. Step 4: Simplify right side
    68,914.71x = 5,284,814,713.43
  5. Step 5: Solve for x
    x = 5,284,814,713.43/68,914.71
  6. Step 6: Final answer
    x = 76,686.31

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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.