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Finding the Fourth Proportional to 72,943.44, 109,415.12 and 17,539.44

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Solution

The fourth proportional to 72,943.44, 109,415.12 and 17,539.44 is: 26,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,943.44 : 109,415.12 = 17,539.44 : x
  2. Step 2: Convert to fraction form
    72,943.44/109,415.12 = 17,539.44/x
  3. Step 3: Cross multiply
    72,943.44x = 109,415.12 × 17,539.44
  4. Step 4: Simplify right side
    72,943.44x = 1,919,079,932.33
  5. Step 5: Solve for x
    x = 1,919,079,932.33/72,943.44
  6. Step 6: Final answer
    x = 26,309.15

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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.