Home / 77,631.94-107,114.97-49,379.14

Finding the Fourth Proportional to 77,631.94, 107,114.97 and 49,379.14

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Solution

The fourth proportional to 77,631.94, 107,114.97 and 49,379.14 is: 68,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,631.94 : 107,114.97 = 49,379.14 : x
  2. Step 2: Convert to fraction form
    77,631.94/107,114.97 = 49,379.14/x
  3. Step 3: Cross multiply
    77,631.94x = 107,114.97 × 49,379.14
  4. Step 4: Simplify right side
    77,631.94x = 5,289,245,099.73
  5. Step 5: Solve for x
    x = 5,289,245,099.73/77,631.94
  6. Step 6: Final answer
    x = 68,132.33

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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.