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Finding the Fourth Proportional to 79,889.48, 119,836.04 and 20,727.48

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Solution

The fourth proportional to 79,889.48, 119,836.04 and 20,727.48 is: 31,091.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,889.48 : 119,836.04 = 20,727.48 : x
  2. Step 2: Convert to fraction form
    79,889.48/119,836.04 = 20,727.48/x
  3. Step 3: Cross multiply
    79,889.48x = 119,836.04 × 20,727.48
  4. Step 4: Simplify right side
    79,889.48x = 2,483,899,122.38
  5. Step 5: Solve for x
    x = 2,483,899,122.38/79,889.48
  6. Step 6: Final answer
    x = 31,091.69

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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.