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Finding the Fourth Proportional to 79,041.52, 109,183.80 and 63,238.96

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Solution

The fourth proportional to 79,041.52, 109,183.80 and 63,238.96 is: 87,354.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,041.52 : 109,183.80 = 63,238.96 : x
  2. Step 2: Convert to fraction form
    79,041.52/109,183.80 = 63,238.96/x
  3. Step 3: Cross multiply
    79,041.52x = 109,183.80 × 63,238.96
  4. Step 4: Simplify right side
    79,041.52x = 6,904,669,960.85
  5. Step 5: Solve for x
    x = 6,904,669,960.85/79,041.52
  6. Step 6: Final answer
    x = 87,354.97

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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.