Home / 81,413.44-121,961.16-56,108.46

Finding the Fourth Proportional to 81,413.44, 121,961.16 and 56,108.46

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Solution

The fourth proportional to 81,413.44, 121,961.16 and 56,108.46 is: 84,053.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,413.44 : 121,961.16 = 56,108.46 : x
  2. Step 2: Convert to fraction form
    81,413.44/121,961.16 = 56,108.46/x
  3. Step 3: Cross multiply
    81,413.44x = 121,961.16 × 56,108.46
  4. Step 4: Simplify right side
    81,413.44x = 6,843,052,867.41
  5. Step 5: Solve for x
    x = 6,843,052,867.41/81,413.44
  6. Step 6: Final answer
    x = 84,053.11

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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.