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Finding the Fourth Proportional to 81,144.80, 111,974.48 and 45,333.04

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Solution

The fourth proportional to 81,144.80, 111,974.48 and 45,333.04 is: 62,556.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,144.80 : 111,974.48 = 45,333.04 : x
  2. Step 2: Convert to fraction form
    81,144.80/111,974.48 = 45,333.04/x
  3. Step 3: Cross multiply
    81,144.80x = 111,974.48 × 45,333.04
  4. Step 4: Simplify right side
    81,144.80x = 5,076,143,580.82
  5. Step 5: Solve for x
    x = 5,076,143,580.82/81,144.80
  6. Step 6: Final answer
    x = 62,556.61

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1.5x scale

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.