Home / 87,791.52-121,151.64-47,505

Finding the Fourth Proportional to 87,791.52, 121,151.64 and 47,505

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Solution

The fourth proportional to 87,791.52, 121,151.64 and 47,505 is: 65,556.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,791.52 : 121,151.64 = 47,505 : x
  2. Step 2: Convert to fraction form
    87,791.52/121,151.64 = 47,505/x
  3. Step 3: Cross multiply
    87,791.52x = 121,151.64 × 47,505
  4. Step 4: Simplify right side
    87,791.52x = 5,755,308,658.20
  5. Step 5: Solve for x
    x = 5,755,308,658.20/87,791.52
  6. Step 6: Final answer
    x = 65,556.54

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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.