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Finding the Fourth Proportional to 73,186.48, 109,787.04 and 19,879.30

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Solution

The fourth proportional to 73,186.48, 109,787.04 and 19,879.30 is: 29,820.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,186.48 : 109,787.04 = 19,879.30 : x
  2. Step 2: Convert to fraction form
    73,186.48/109,787.04 = 19,879.30/x
  3. Step 3: Cross multiply
    73,186.48x = 109,787.04 × 19,879.30
  4. Step 4: Simplify right side
    73,186.48x = 2,182,489,504.27
  5. Step 5: Solve for x
    x = 2,182,489,504.27/73,186.48
  6. Step 6: Final answer
    x = 29,820.94

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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.