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Finding the Fourth Proportional to 66,023.40, 99,059.40 and 21,651.60

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Solution

The fourth proportional to 66,023.40, 99,059.40 and 21,651.60 is: 32,485.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,023.40 : 99,059.40 = 21,651.60 : x
  2. Step 2: Convert to fraction form
    66,023.40/99,059.40 = 21,651.60/x
  3. Step 3: Cross multiply
    66,023.40x = 99,059.40 × 21,651.60
  4. Step 4: Simplify right side
    66,023.40x = 2,144,794,505.04
  5. Step 5: Solve for x
    x = 2,144,794,505.04/66,023.40
  6. Step 6: Final answer
    x = 32,485.37

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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.