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Finding the Fourth Proportional to 62,775, 86,637.20 and 36,279

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Solution

The fourth proportional to 62,775, 86,637.20 and 36,279 is: 50,069.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,775 : 86,637.20 = 36,279 : x
  2. Step 2: Convert to fraction form
    62,775/86,637.20 = 36,279/x
  3. Step 3: Cross multiply
    62,775x = 86,637.20 × 36,279
  4. Step 4: Simplify right side
    62,775x = 3,143,110,978.80
  5. Step 5: Solve for x
    x = 3,143,110,978.80/62,775
  6. Step 6: Final answer
    x = 50,069.47

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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.