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Finding the Fourth Proportional to 66,969.56, 100,469.68 and 29,025.20

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Solution

The fourth proportional to 66,969.56, 100,469.68 and 29,025.20 is: 43,544.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,969.56 : 100,469.68 = 29,025.20 : x
  2. Step 2: Convert to fraction form
    66,969.56/100,469.68 = 29,025.20/x
  3. Step 3: Cross multiply
    66,969.56x = 100,469.68 × 29,025.20
  4. Step 4: Simplify right side
    66,969.56x = 2,916,151,981.02
  5. Step 5: Solve for x
    x = 2,916,151,981.02/66,969.56
  6. Step 6: Final answer
    x = 43,544.44

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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.