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Finding the Fourth Proportional to 69,784.30, 104,660.73 and 19,863.29

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Solution

The fourth proportional to 69,784.30, 104,660.73 and 19,863.29 is: 29,790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,784.30 : 104,660.73 = 19,863.29 : x
  2. Step 2: Convert to fraction form
    69,784.30/104,660.73 = 19,863.29/x
  3. Step 3: Cross multiply
    69,784.30x = 104,660.73 × 19,863.29
  4. Step 4: Simplify right side
    69,784.30x = 2,078,906,693.25
  5. Step 5: Solve for x
    x = 2,078,906,693.25/69,784.30
  6. Step 6: Final answer
    x = 29,790.46

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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.