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Finding the Fourth Proportional to 89,771.57, 123,879.20 and 49,483.25

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Solution

The fourth proportional to 89,771.57, 123,879.20 and 49,483.25 is: 68,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,771.57 : 123,879.20 = 49,483.25 : x
  2. Step 2: Convert to fraction form
    89,771.57/123,879.20 = 49,483.25/x
  3. Step 3: Cross multiply
    89,771.57x = 123,879.20 × 49,483.25
  4. Step 4: Simplify right side
    89,771.57x = 6,129,944,556.59
  5. Step 5: Solve for x
    x = 6,129,944,556.59/89,771.57
  6. Step 6: Final answer
    x = 68,283.81

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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.