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Finding the Fourth Proportional to 57,581.88, 86,364.31 and 18,148.65

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Solution

The fourth proportional to 57,581.88, 86,364.31 and 18,148.65 is: 27,220.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,581.88 : 86,364.31 = 18,148.65 : x
  2. Step 2: Convert to fraction form
    57,581.88/86,364.31 = 18,148.65/x
  3. Step 3: Cross multiply
    57,581.88x = 86,364.31 × 18,148.65
  4. Step 4: Simplify right side
    57,581.88x = 1,567,395,634.68
  5. Step 5: Solve for x
    x = 1,567,395,634.68/57,581.88
  6. Step 6: Final answer
    x = 27,220.29

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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.