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Finding the Fourth Proportional to 66,910.54, 100,421.03 and 33,640.06

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Solution

The fourth proportional to 66,910.54, 100,421.03 and 33,640.06 is: 50,487.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,910.54 : 100,421.03 = 33,640.06 : x
  2. Step 2: Convert to fraction form
    66,910.54/100,421.03 = 33,640.06/x
  3. Step 3: Cross multiply
    66,910.54x = 100,421.03 × 33,640.06
  4. Step 4: Simplify right side
    66,910.54x = 3,378,169,306.26
  5. Step 5: Solve for x
    x = 3,378,169,306.26/66,910.54
  6. Step 6: Final answer
    x = 50,487.85

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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.