Home / 79,286.68-109,309.78-62,987.97

Finding the Fourth Proportional to 79,286.68, 109,309.78 and 62,987.97

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Solution

The fourth proportional to 79,286.68, 109,309.78 and 62,987.97 is: 86,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,286.68 : 109,309.78 = 62,987.97 : x
  2. Step 2: Convert to fraction form
    79,286.68/109,309.78 = 62,987.97/x
  3. Step 3: Cross multiply
    79,286.68x = 109,309.78 × 62,987.97
  4. Step 4: Simplify right side
    79,286.68x = 6,885,201,180.42
  5. Step 5: Solve for x
    x = 6,885,201,180.42/79,286.68
  6. Step 6: Final answer
    x = 86,839.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.