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Finding the Fourth Proportional to 62,406, 86,120.64 and 40,050

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Solution

The fourth proportional to 62,406, 86,120.64 and 40,050 is: 55,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,406 : 86,120.64 = 40,050 : x
  2. Step 2: Convert to fraction form
    62,406/86,120.64 = 40,050/x
  3. Step 3: Cross multiply
    62,406x = 86,120.64 × 40,050
  4. Step 4: Simplify right side
    62,406x = 3,449,131,632
  5. Step 5: Solve for x
    x = 3,449,131,632/62,406
  6. Step 6: Final answer
    x = 55,269.23

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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.