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Finding the Fourth Proportional to 69,277.29, 103,915.31 and 21,892.39

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Solution

The fourth proportional to 69,277.29, 103,915.31 and 21,892.39 is: 32,838.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,277.29 : 103,915.31 = 21,892.39 : x
  2. Step 2: Convert to fraction form
    69,277.29/103,915.31 = 21,892.39/x
  3. Step 3: Cross multiply
    69,277.29x = 103,915.31 × 21,892.39
  4. Step 4: Simplify right side
    69,277.29x = 2,274,954,808.01
  5. Step 5: Solve for x
    x = 2,274,954,808.01/69,277.29
  6. Step 6: Final answer
    x = 32,838.39

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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.