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Finding the Fourth Proportional to 57,873.73, 86,816.82 and 18,421.61

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Solution

The fourth proportional to 57,873.73, 86,816.82 and 18,421.61 is: 27,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,873.73 : 86,816.82 = 18,421.61 : x
  2. Step 2: Convert to fraction form
    57,873.73/86,816.82 = 18,421.61/x
  3. Step 3: Cross multiply
    57,873.73x = 86,816.82 × 18,421.61
  4. Step 4: Simplify right side
    57,873.73x = 1,599,305,507.37
  5. Step 5: Solve for x
    x = 1,599,305,507.37/57,873.73
  6. Step 6: Final answer
    x = 27,634.40

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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.