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Finding the Fourth Proportional to 53,879.47, 80,791.52 and 28,940.49

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Solution

The fourth proportional to 53,879.47, 80,791.52 and 28,940.49 is: 43,395.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,879.47 : 80,791.52 = 28,940.49 : x
  2. Step 2: Convert to fraction form
    53,879.47/80,791.52 = 28,940.49/x
  3. Step 3: Cross multiply
    53,879.47x = 80,791.52 × 28,940.49
  4. Step 4: Simplify right side
    53,879.47x = 2,338,146,031.94
  5. Step 5: Solve for x
    x = 2,338,146,031.94/53,879.47
  6. Step 6: Final answer
    x = 43,395.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.