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Finding the Fourth Proportional to 62,279, 85,945.04 and 39,923

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Solution

The fourth proportional to 62,279, 85,945.04 and 39,923 is: 55,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,279 : 85,945.04 = 39,923 : x
  2. Step 2: Convert to fraction form
    62,279/85,945.04 = 39,923/x
  3. Step 3: Cross multiply
    62,279x = 85,945.04 × 39,923
  4. Step 4: Simplify right side
    62,279x = 3,431,183,831.92
  5. Step 5: Solve for x
    x = 3,431,183,831.92/62,279
  6. Step 6: Final answer
    x = 55,093.75

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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.