Home / 81,403.87-122,007.38-41,939.45

Finding the Fourth Proportional to 81,403.87, 122,007.38 and 41,939.45

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Solution

The fourth proportional to 81,403.87, 122,007.38 and 41,939.45 is: 62,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.87 : 122,007.38 = 41,939.45 : x
  2. Step 2: Convert to fraction form
    81,403.87/122,007.38 = 41,939.45/x
  3. Step 3: Cross multiply
    81,403.87x = 122,007.38 × 41,939.45
  4. Step 4: Simplify right side
    81,403.87x = 5,116,922,413.14
  5. Step 5: Solve for x
    x = 5,116,922,413.14/81,403.87
  6. Step 6: Final answer
    x = 62,858.47

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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.