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Finding the Fourth Proportional to 66,504.64, 99,734.83 and 21,515.31

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Solution

The fourth proportional to 66,504.64, 99,734.83 and 21,515.31 is: 32,265.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,504.64 : 99,734.83 = 21,515.31 : x
  2. Step 2: Convert to fraction form
    66,504.64/99,734.83 = 21,515.31/x
  3. Step 3: Cross multiply
    66,504.64x = 99,734.83 × 21,515.31
  4. Step 4: Simplify right side
    66,504.64x = 2,145,825,731.46
  5. Step 5: Solve for x
    x = 2,145,825,731.46/66,504.64
  6. Step 6: Final answer
    x = 32,265.81

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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.