Home / 81,319.39-121,979.03-33,956.79

Finding the Fourth Proportional to 81,319.39, 121,979.03 and 33,956.79

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Solution

The fourth proportional to 81,319.39, 121,979.03 and 33,956.79 is: 50,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,319.39 : 121,979.03 = 33,956.79 : x
  2. Step 2: Convert to fraction form
    81,319.39/121,979.03 = 33,956.79/x
  3. Step 3: Cross multiply
    81,319.39x = 121,979.03 × 33,956.79
  4. Step 4: Simplify right side
    81,319.39x = 4,142,015,869.92
  5. Step 5: Solve for x
    x = 4,142,015,869.92/81,319.39
  6. Step 6: Final answer
    x = 50,935.15

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Similar ratio
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1.5x scale

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.