Home / 81,091.28-111,906.21-45,282.60

Finding the Fourth Proportional to 81,091.28, 111,906.21 and 45,282.60

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Solution

The fourth proportional to 81,091.28, 111,906.21 and 45,282.60 is: 62,490.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,091.28 : 111,906.21 = 45,282.60 : x
  2. Step 2: Convert to fraction form
    81,091.28/111,906.21 = 45,282.60/x
  3. Step 3: Cross multiply
    81,091.28x = 111,906.21 × 45,282.60
  4. Step 4: Simplify right side
    81,091.28x = 5,067,404,144.95
  5. Step 5: Solve for x
    x = 5,067,404,144.95/81,091.28
  6. Step 6: Final answer
    x = 62,490.13

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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.