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Finding the Fourth Proportional to 36,694.50, 50,642.73 and 21,790.50

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Solution

The fourth proportional to 36,694.50, 50,642.73 and 21,790.50 is: 30,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,694.50 : 50,642.73 = 21,790.50 : x
  2. Step 2: Convert to fraction form
    36,694.50/50,642.73 = 21,790.50/x
  3. Step 3: Cross multiply
    36,694.50x = 50,642.73 × 21,790.50
  4. Step 4: Simplify right side
    36,694.50x = 1,103,530,408.07
  5. Step 5: Solve for x
    x = 1,103,530,408.07/36,694.50
  6. Step 6: Final answer
    x = 30,073.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.