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Finding the Fourth Proportional to 68,917.14, 103,375.71 and 19,669.14

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Solution

The fourth proportional to 68,917.14, 103,375.71 and 19,669.14 is: 29,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,917.14 : 103,375.71 = 19,669.14 : x
  2. Step 2: Convert to fraction form
    68,917.14/103,375.71 = 19,669.14/x
  3. Step 3: Cross multiply
    68,917.14x = 103,375.71 × 19,669.14
  4. Step 4: Simplify right side
    68,917.14x = 2,033,311,312.59
  5. Step 5: Solve for x
    x = 2,033,311,312.59/68,917.14
  6. Step 6: Final answer
    x = 29,503.71

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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.