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Finding the Fourth Proportional to 79,399.83, 119,009.13 and 31,984.54

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Solution

The fourth proportional to 79,399.83, 119,009.13 and 31,984.54 is: 47,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,399.83 : 119,009.13 = 31,984.54 : x
  2. Step 2: Convert to fraction form
    79,399.83/119,009.13 = 31,984.54/x
  3. Step 3: Cross multiply
    79,399.83x = 119,009.13 × 31,984.54
  4. Step 4: Simplify right side
    79,399.83x = 3,806,452,278.85
  5. Step 5: Solve for x
    x = 3,806,452,278.85/79,399.83
  6. Step 6: Final answer
    x = 47,940.31

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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.