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Finding the Fourth Proportional to 66,172.26, 99,273.74 and 21,797.42

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Solution

The fourth proportional to 66,172.26, 99,273.74 and 21,797.42 is: 32,701.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.26 : 99,273.74 = 21,797.42 : x
  2. Step 2: Convert to fraction form
    66,172.26/99,273.74 = 21,797.42/x
  3. Step 3: Cross multiply
    66,172.26x = 99,273.74 × 21,797.42
  4. Step 4: Simplify right side
    66,172.26x = 2,163,910,800.40
  5. Step 5: Solve for x
    x = 2,163,910,800.40/66,172.26
  6. Step 6: Final answer
    x = 32,701.18

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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.