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Finding the Fourth Proportional to 66,571.52, 99,851.81 and 19,824.39

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Solution

The fourth proportional to 66,571.52, 99,851.81 and 19,824.39 is: 29,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,571.52 : 99,851.81 = 19,824.39 : x
  2. Step 2: Convert to fraction form
    66,571.52/99,851.81 = 19,824.39/x
  3. Step 3: Cross multiply
    66,571.52x = 99,851.81 × 19,824.39
  4. Step 4: Simplify right side
    66,571.52x = 1,979,501,124.52
  5. Step 5: Solve for x
    x = 1,979,501,124.52/66,571.52
  6. Step 6: Final answer
    x = 29,734.96

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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.