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Finding the Fourth Proportional to 66,105.92, 99,196.68 and 65,571.32

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Solution

The fourth proportional to 66,105.92, 99,196.68 and 65,571.32 is: 98,394.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,105.92 : 99,196.68 = 65,571.32 : x
  2. Step 2: Convert to fraction form
    66,105.92/99,196.68 = 65,571.32/x
  3. Step 3: Cross multiply
    66,105.92x = 99,196.68 × 65,571.32
  4. Step 4: Simplify right side
    66,105.92x = 6,504,457,247.22
  5. Step 5: Solve for x
    x = 6,504,457,247.22/66,105.92
  6. Step 6: Final answer
    x = 98,394.47

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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.