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Finding the Fourth Proportional to 81,142.79, 111,976.76 and 44,843.22

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Solution

The fourth proportional to 81,142.79, 111,976.76 and 44,843.22 is: 61,883.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,142.79 : 111,976.76 = 44,843.22 : x
  2. Step 2: Convert to fraction form
    81,142.79/111,976.76 = 44,843.22/x
  3. Step 3: Cross multiply
    81,142.79x = 111,976.76 × 44,843.22
  4. Step 4: Simplify right side
    81,142.79x = 5,021,398,259.35
  5. Step 5: Solve for x
    x = 5,021,398,259.35/81,142.79
  6. Step 6: Final answer
    x = 61,883.48

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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.