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Finding the Fourth Proportional to 71,922.78, 107,884.02 and 19,332.27

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Solution

The fourth proportional to 71,922.78, 107,884.02 and 19,332.27 is: 28,998.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,922.78 : 107,884.02 = 19,332.27 : x
  2. Step 2: Convert to fraction form
    71,922.78/107,884.02 = 19,332.27/x
  3. Step 3: Cross multiply
    71,922.78x = 107,884.02 × 19,332.27
  4. Step 4: Simplify right side
    71,922.78x = 2,085,643,003.33
  5. Step 5: Solve for x
    x = 2,085,643,003.33/71,922.78
  6. Step 6: Final answer
    x = 28,998.36

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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.