Home / 75,781.28-104,575.76-41,791.20

Finding the Fourth Proportional to 75,781.28, 104,575.76 and 41,791.20

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Solution

The fourth proportional to 75,781.28, 104,575.76 and 41,791.20 is: 57,670.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,781.28 : 104,575.76 = 41,791.20 : x
  2. Step 2: Convert to fraction form
    75,781.28/104,575.76 = 41,791.20/x
  3. Step 3: Cross multiply
    75,781.28x = 104,575.76 × 41,791.20
  4. Step 4: Simplify right side
    75,781.28x = 4,370,346,501.31
  5. Step 5: Solve for x
    x = 4,370,346,501.31/75,781.28
  6. Step 6: Final answer
    x = 57,670.53

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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.