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Finding the Fourth Proportional to 74,251.70, 111,365.70 and 21,648.88

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Solution

The fourth proportional to 74,251.70, 111,365.70 and 21,648.88 is: 32,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,251.70 : 111,365.70 = 21,648.88 : x
  2. Step 2: Convert to fraction form
    74,251.70/111,365.70 = 21,648.88/x
  3. Step 3: Cross multiply
    74,251.70x = 111,365.70 × 21,648.88
  4. Step 4: Simplify right side
    74,251.70x = 2,410,942,675.42
  5. Step 5: Solve for x
    x = 2,410,942,675.42/74,251.70
  6. Step 6: Final answer
    x = 32,469.87

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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.