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Finding the Fourth Proportional to 109,310.72, 150,849.09 and 63,379.28

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Solution

The fourth proportional to 109,310.72, 150,849.09 and 63,379.28 is: 87,463.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,310.72 : 150,849.09 = 63,379.28 : x
  2. Step 2: Convert to fraction form
    109,310.72/150,849.09 = 63,379.28/x
  3. Step 3: Cross multiply
    109,310.72x = 150,849.09 × 63,379.28
  4. Step 4: Simplify right side
    109,310.72x = 9,560,706,712.86
  5. Step 5: Solve for x
    x = 9,560,706,712.86/109,310.72
  6. Step 6: Final answer
    x = 87,463.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.