Home / 57,661.43-86,491.61-18,218.54

Finding the Fourth Proportional to 57,661.43, 86,491.61 and 18,218.54

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Solution

The fourth proportional to 57,661.43, 86,491.61 and 18,218.54 is: 27,327.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,661.43 : 86,491.61 = 18,218.54 : x
  2. Step 2: Convert to fraction form
    57,661.43/86,491.61 = 18,218.54/x
  3. Step 3: Cross multiply
    57,661.43x = 86,491.61 × 18,218.54
  4. Step 4: Simplify right side
    57,661.43x = 1,575,750,469.54
  5. Step 5: Solve for x
    x = 1,575,750,469.54/57,661.43
  6. Step 6: Final answer
    x = 27,327.64

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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.