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Finding the Fourth Proportional to 71,857.53, 107,804.52 and 21,935.61

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Solution

The fourth proportional to 71,857.53, 107,804.52 and 21,935.61 is: 32,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,857.53 : 107,804.52 = 21,935.61 : x
  2. Step 2: Convert to fraction form
    71,857.53/107,804.52 = 21,935.61/x
  3. Step 3: Cross multiply
    71,857.53x = 107,804.52 × 21,935.61
  4. Step 4: Simplify right side
    71,857.53x = 2,364,757,906.96
  5. Step 5: Solve for x
    x = 2,364,757,906.96/71,857.53
  6. Step 6: Final answer
    x = 32,908.98

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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.