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Finding the Fourth Proportional to 52,879.39, 72,968.92 and 30,213.87

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Solution

The fourth proportional to 52,879.39, 72,968.92 and 30,213.87 is: 41,692.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,879.39 : 72,968.92 = 30,213.87 : x
  2. Step 2: Convert to fraction form
    52,879.39/72,968.92 = 30,213.87/x
  3. Step 3: Cross multiply
    52,879.39x = 72,968.92 × 30,213.87
  4. Step 4: Simplify right side
    52,879.39x = 2,204,673,113.75
  5. Step 5: Solve for x
    x = 2,204,673,113.75/52,879.39
  6. Step 6: Final answer
    x = 41,692.49

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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.