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Finding the Fourth Proportional to 67,694.82, 101,558.43 and 20,947.70

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Solution

The fourth proportional to 67,694.82, 101,558.43 and 20,947.70 is: 31,426.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,694.82 : 101,558.43 = 20,947.70 : x
  2. Step 2: Convert to fraction form
    67,694.82/101,558.43 = 20,947.70/x
  3. Step 3: Cross multiply
    67,694.82x = 101,558.43 × 20,947.70
  4. Step 4: Simplify right side
    67,694.82x = 2,127,415,524.11
  5. Step 5: Solve for x
    x = 2,127,415,524.11/67,694.82
  6. Step 6: Final answer
    x = 31,426.56

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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.