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Finding the Fourth Proportional to 69,857.73, 104,787.54 and 19,937.79

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Solution

The fourth proportional to 69,857.73, 104,787.54 and 19,937.79 is: 29,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,857.73 : 104,787.54 = 19,937.79 : x
  2. Step 2: Convert to fraction form
    69,857.73/104,787.54 = 19,937.79/x
  3. Step 3: Cross multiply
    69,857.73x = 104,787.54 × 19,937.79
  4. Step 4: Simplify right side
    69,857.73x = 2,089,231,967.14
  5. Step 5: Solve for x
    x = 2,089,231,967.14/69,857.73
  6. Step 6: Final answer
    x = 29,906.95

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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.