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Finding the Fourth Proportional to 72,447.24, 108,659.19 and 19,844.43

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Solution

The fourth proportional to 72,447.24, 108,659.19 and 19,844.43 is: 29,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,447.24 : 108,659.19 = 19,844.43 : x
  2. Step 2: Convert to fraction form
    72,447.24/108,659.19 = 19,844.43/x
  3. Step 3: Cross multiply
    72,447.24x = 108,659.19 × 19,844.43
  4. Step 4: Simplify right side
    72,447.24x = 2,156,279,146.52
  5. Step 5: Solve for x
    x = 2,156,279,146.52/72,447.24
  6. Step 6: Final answer
    x = 29,763.44

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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.