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Finding the Fourth Proportional to 68,696.20, 103,059.01 and 21,310.27

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Solution

The fourth proportional to 68,696.20, 103,059.01 and 21,310.27 is: 31,969.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,696.20 : 103,059.01 = 21,310.27 : x
  2. Step 2: Convert to fraction form
    68,696.20/103,059.01 = 21,310.27/x
  3. Step 3: Cross multiply
    68,696.20x = 103,059.01 × 21,310.27
  4. Step 4: Simplify right side
    68,696.20x = 2,196,215,329.03
  5. Step 5: Solve for x
    x = 2,196,215,329.03/68,696.20
  6. Step 6: Final answer
    x = 31,969.97

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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.