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Finding the Fourth Proportional to 69,858.28, 104,791.21 and 19,934.53

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Solution

The fourth proportional to 69,858.28, 104,791.21 and 19,934.53 is: 29,902.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,858.28 : 104,791.21 = 19,934.53 : x
  2. Step 2: Convert to fraction form
    69,858.28/104,791.21 = 19,934.53/x
  3. Step 3: Cross multiply
    69,858.28x = 104,791.21 × 19,934.53
  4. Step 4: Simplify right side
    69,858.28x = 2,088,963,519.48
  5. Step 5: Solve for x
    x = 2,088,963,519.48/69,858.28
  6. Step 6: Final answer
    x = 29,902.88

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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.