Home / 81,080.18-111,942.05-52,413.66

Finding the Fourth Proportional to 81,080.18, 111,942.05 and 52,413.66

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Solution

The fourth proportional to 81,080.18, 111,942.05 and 52,413.66 is: 72,364.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,080.18 : 111,942.05 = 52,413.66 : x
  2. Step 2: Convert to fraction form
    81,080.18/111,942.05 = 52,413.66/x
  3. Step 3: Cross multiply
    81,080.18x = 111,942.05 × 52,413.66
  4. Step 4: Simplify right side
    81,080.18x = 5,867,292,286.33
  5. Step 5: Solve for x
    x = 5,867,292,286.33/81,080.18
  6. Step 6: Final answer
    x = 72,364.08

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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.