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Finding the Fourth Proportional to 79,007.80, 108,977.34 and 50,747.80

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Solution

The fourth proportional to 79,007.80, 108,977.34 and 50,747.80 is: 69,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,007.80 : 108,977.34 = 50,747.80 : x
  2. Step 2: Convert to fraction form
    79,007.80/108,977.34 = 50,747.80/x
  3. Step 3: Cross multiply
    79,007.80x = 108,977.34 × 50,747.80
  4. Step 4: Simplify right side
    79,007.80x = 5,530,360,254.85
  5. Step 5: Solve for x
    x = 5,530,360,254.85/79,007.80
  6. Step 6: Final answer
    x = 69,997.65

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1.5x scale

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.