Home / 57,274.95-79,039.86-31,781.42

Finding the Fourth Proportional to 57,274.95, 79,039.86 and 31,781.42

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Solution

The fourth proportional to 57,274.95, 79,039.86 and 31,781.42 is: 43,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,274.95 : 79,039.86 = 31,781.42 : x
  2. Step 2: Convert to fraction form
    57,274.95/79,039.86 = 31,781.42/x
  3. Step 3: Cross multiply
    57,274.95x = 79,039.86 × 31,781.42
  4. Step 4: Simplify right side
    57,274.95x = 2,511,998,987.40
  5. Step 5: Solve for x
    x = 2,511,998,987.40/57,274.95
  6. Step 6: Final answer
    x = 43,858.60

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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.