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Finding the Fourth Proportional to 71,523.97, 107,286.72 and 21,604.48

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Solution

The fourth proportional to 71,523.97, 107,286.72 and 21,604.48 is: 32,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,523.97 : 107,286.72 = 21,604.48 : x
  2. Step 2: Convert to fraction form
    71,523.97/107,286.72 = 21,604.48/x
  3. Step 3: Cross multiply
    71,523.97x = 107,286.72 × 21,604.48
  4. Step 4: Simplify right side
    71,523.97x = 2,317,873,796.51
  5. Step 5: Solve for x
    x = 2,317,873,796.51/71,523.97
  6. Step 6: Final answer
    x = 32,406.95

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1.5x scale

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.