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Finding the Fourth Proportional to 66,786.97, 100,229.50 and 53,796.19

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Solution

The fourth proportional to 66,786.97, 100,229.50 and 53,796.19 is: 80,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.97 : 100,229.50 = 53,796.19 : x
  2. Step 2: Convert to fraction form
    66,786.97/100,229.50 = 53,796.19/x
  3. Step 3: Cross multiply
    66,786.97x = 100,229.50 × 53,796.19
  4. Step 4: Simplify right side
    66,786.97x = 5,391,965,225.61
  5. Step 5: Solve for x
    x = 5,391,965,225.61/66,786.97
  6. Step 6: Final answer
    x = 80,733.79

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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.