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Finding the Fourth Proportional to 66,698.09, 100,047.31 and 27,255.21

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Solution

The fourth proportional to 66,698.09, 100,047.31 and 27,255.21 is: 40,882.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,698.09 : 100,047.31 = 27,255.21 : x
  2. Step 2: Convert to fraction form
    66,698.09/100,047.31 = 27,255.21/x
  3. Step 3: Cross multiply
    66,698.09x = 100,047.31 × 27,255.21
  4. Step 4: Simplify right side
    66,698.09x = 2,726,810,443.99
  5. Step 5: Solve for x
    x = 2,726,810,443.99/66,698.09
  6. Step 6: Final answer
    x = 40,882.89

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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.