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Finding the Fourth Proportional to 69,958.51, 104,936.78 and 39,908.62

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Solution

The fourth proportional to 69,958.51, 104,936.78 and 39,908.62 is: 59,862.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,958.51 : 104,936.78 = 39,908.62 : x
  2. Step 2: Convert to fraction form
    69,958.51/104,936.78 = 39,908.62/x
  3. Step 3: Cross multiply
    69,958.51x = 104,936.78 × 39,908.62
  4. Step 4: Simplify right side
    69,958.51x = 4,187,882,077.04
  5. Step 5: Solve for x
    x = 4,187,882,077.04/69,958.51
  6. Step 6: Final answer
    x = 59,862.37

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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.