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Finding the Fourth Proportional to 79,206.53, 109,305 and 47,382.92

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Solution

The fourth proportional to 79,206.53, 109,305 and 47,382.92 is: 65,388.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,206.53 : 109,305 = 47,382.92 : x
  2. Step 2: Convert to fraction form
    79,206.53/109,305 = 47,382.92/x
  3. Step 3: Cross multiply
    79,206.53x = 109,305 × 47,382.92
  4. Step 4: Simplify right side
    79,206.53x = 5,179,189,524.08
  5. Step 5: Solve for x
    x = 5,179,189,524.08/79,206.53
  6. Step 6: Final answer
    x = 65,388.41

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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.