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Finding the Fourth Proportional to 36,723, 50,682.06 and 21,819

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Solution

The fourth proportional to 36,723, 50,682.06 and 21,819 is: 30,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,723 : 50,682.06 = 21,819 : x
  2. Step 2: Convert to fraction form
    36,723/50,682.06 = 21,819/x
  3. Step 3: Cross multiply
    36,723x = 50,682.06 × 21,819
  4. Step 4: Simplify right side
    36,723x = 1,105,831,867.14
  5. Step 5: Solve for x
    x = 1,105,831,867.14/36,723
  6. Step 6: Final answer
    x = 30,112.79

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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.