Home / 57,274.86-79,039.73-31,781.33

Finding the Fourth Proportional to 57,274.86, 79,039.73 and 31,781.33

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Solution

The fourth proportional to 57,274.86, 79,039.73 and 31,781.33 is: 43,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,274.86 : 79,039.73 = 31,781.33 : x
  2. Step 2: Convert to fraction form
    57,274.86/79,039.73 = 31,781.33/x
  3. Step 3: Cross multiply
    57,274.86x = 79,039.73 × 31,781.33
  4. Step 4: Simplify right side
    57,274.86x = 2,511,987,742.24
  5. Step 5: Solve for x
    x = 2,511,987,742.24/57,274.86
  6. Step 6: Final answer
    x = 43,858.47

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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.