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Finding the Fourth Proportional to 79,286.92, 109,473.37 and 51,041.81

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Solution

The fourth proportional to 79,286.92, 109,473.37 and 51,041.81 is: 70,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,286.92 : 109,473.37 = 51,041.81 : x
  2. Step 2: Convert to fraction form
    79,286.92/109,473.37 = 51,041.81/x
  3. Step 3: Cross multiply
    79,286.92x = 109,473.37 × 51,041.81
  4. Step 4: Simplify right side
    79,286.92x = 5,587,719,097.68
  5. Step 5: Solve for x
    x = 5,587,719,097.68/79,286.92
  6. Step 6: Final answer
    x = 70,474.67

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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.