Home / 57,716.21-79,649.62-31,874.68

Finding the Fourth Proportional to 57,716.21, 79,649.62 and 31,874.68

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Solution

The fourth proportional to 57,716.21, 79,649.62 and 31,874.68 is: 43,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,716.21 : 79,649.62 = 31,874.68 : x
  2. Step 2: Convert to fraction form
    57,716.21/79,649.62 = 31,874.68/x
  3. Step 3: Cross multiply
    57,716.21x = 79,649.62 × 31,874.68
  4. Step 4: Simplify right side
    57,716.21x = 2,538,806,169.50
  5. Step 5: Solve for x
    x = 2,538,806,169.50/57,716.21
  6. Step 6: Final answer
    x = 43,987.75

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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.