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Finding the Fourth Proportional to 66,979.84, 100,469.76 and 52,199.84

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Solution

The fourth proportional to 66,979.84, 100,469.76 and 52,199.84 is: 78,299.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,979.84 : 100,469.76 = 52,199.84 : x
  2. Step 2: Convert to fraction form
    66,979.84/100,469.76 = 52,199.84/x
  3. Step 3: Cross multiply
    66,979.84x = 100,469.76 × 52,199.84
  4. Step 4: Simplify right side
    66,979.84x = 5,244,505,396.84
  5. Step 5: Solve for x
    x = 5,244,505,396.84/66,979.84
  6. Step 6: Final answer
    x = 78,299.76

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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.