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Finding the Fourth Proportional to 67,679.73, 101,529.45 and 20,936.25

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Solution

The fourth proportional to 67,679.73, 101,529.45 and 20,936.25 is: 31,407.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,679.73 : 101,529.45 = 20,936.25 : x
  2. Step 2: Convert to fraction form
    67,679.73/101,529.45 = 20,936.25/x
  3. Step 3: Cross multiply
    67,679.73x = 101,529.45 × 20,936.25
  4. Step 4: Simplify right side
    67,679.73x = 2,125,645,947.56
  5. Step 5: Solve for x
    x = 2,125,645,947.56/67,679.73
  6. Step 6: Final answer
    x = 31,407.42

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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.