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Finding the Fourth Proportional to 76,201.38, 105,791.36 and 73,920.42

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Solution

The fourth proportional to 76,201.38, 105,791.36 and 73,920.42 is: 102,624.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,201.38 : 105,791.36 = 73,920.42 : x
  2. Step 2: Convert to fraction form
    76,201.38/105,791.36 = 73,920.42/x
  3. Step 3: Cross multiply
    76,201.38x = 105,791.36 × 73,920.42
  4. Step 4: Simplify right side
    76,201.38x = 7,820,141,393.97
  5. Step 5: Solve for x
    x = 7,820,141,393.97/76,201.38
  6. Step 6: Final answer
    x = 102,624.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.