Home / 66,020.77-91,109.07-35,806.54

Finding the Fourth Proportional to 66,020.77, 91,109.07 and 35,806.54

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Solution

The fourth proportional to 66,020.77, 91,109.07 and 35,806.54 is: 49,413.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.77 : 91,109.07 = 35,806.54 : x
  2. Step 2: Convert to fraction form
    66,020.77/91,109.07 = 35,806.54/x
  3. Step 3: Cross multiply
    66,020.77x = 91,109.07 × 35,806.54
  4. Step 4: Simplify right side
    66,020.77x = 3,262,300,559.32
  5. Step 5: Solve for x
    x = 3,262,300,559.32/66,020.77
  6. Step 6: Final answer
    x = 49,413.25

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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.