Home / 76,791.38-115,187.06-21,387.38

Finding the Fourth Proportional to 76,791.38, 115,187.06 and 21,387.38

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Solution

The fourth proportional to 76,791.38, 115,187.06 and 21,387.38 is: 32,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,791.38 : 115,187.06 = 21,387.38 : x
  2. Step 2: Convert to fraction form
    76,791.38/115,187.06 = 21,387.38/x
  3. Step 3: Cross multiply
    76,791.38x = 115,187.06 × 21,387.38
  4. Step 4: Simplify right side
    76,791.38x = 2,463,548,900.84
  5. Step 5: Solve for x
    x = 2,463,548,900.84/76,791.38
  6. Step 6: Final answer
    x = 32,081.06

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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.