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Finding the Fourth Proportional to 81,270.89, 121,874.81 and 27,952.73

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Solution

The fourth proportional to 81,270.89, 121,874.81 and 27,952.73 is: 41,918.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.89 : 121,874.81 = 27,952.73 : x
  2. Step 2: Convert to fraction form
    81,270.89/121,874.81 = 27,952.73/x
  3. Step 3: Cross multiply
    81,270.89x = 121,874.81 × 27,952.73
  4. Step 4: Simplify right side
    81,270.89x = 3,406,733,048.36
  5. Step 5: Solve for x
    x = 3,406,733,048.36/81,270.89
  6. Step 6: Final answer
    x = 41,918.25

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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.