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Finding the Fourth Proportional to 77,383.89, 115,993.62 and 49,215.33

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Solution

The fourth proportional to 77,383.89, 115,993.62 and 49,215.33 is: 73,770.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,383.89 : 115,993.62 = 49,215.33 : x
  2. Step 2: Convert to fraction form
    77,383.89/115,993.62 = 49,215.33/x
  3. Step 3: Cross multiply
    77,383.89x = 115,993.62 × 49,215.33
  4. Step 4: Simplify right side
    77,383.89x = 5,708,664,286.19
  5. Step 5: Solve for x
    x = 5,708,664,286.19/77,383.89
  6. Step 6: Final answer
    x = 73,770.71

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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.