Home / 57,515.12-86,286.49-18,072.20

Finding the Fourth Proportional to 57,515.12, 86,286.49 and 18,072.20

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Solution

The fourth proportional to 57,515.12, 86,286.49 and 18,072.20 is: 27,112.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,515.12 : 86,286.49 = 18,072.20 : x
  2. Step 2: Convert to fraction form
    57,515.12/86,286.49 = 18,072.20/x
  3. Step 3: Cross multiply
    57,515.12x = 86,286.49 × 18,072.20
  4. Step 4: Simplify right side
    57,515.12x = 1,559,386,273.15
  5. Step 5: Solve for x
    x = 1,559,386,273.15/57,515.12
  6. Step 6: Final answer
    x = 27,112.63

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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.