Home / 67,164.41-100,742.97-20,413.64

Finding the Fourth Proportional to 67,164.41, 100,742.97 and 20,413.64

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Solution

The fourth proportional to 67,164.41, 100,742.97 and 20,413.64 is: 30,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,164.41 : 100,742.97 = 20,413.64 : x
  2. Step 2: Convert to fraction form
    67,164.41/100,742.97 = 20,413.64/x
  3. Step 3: Cross multiply
    67,164.41x = 100,742.97 × 20,413.64
  4. Step 4: Simplify right side
    67,164.41x = 2,056,530,848.04
  5. Step 5: Solve for x
    x = 2,056,530,848.04/67,164.41
  6. Step 6: Final answer
    x = 30,619.35

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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.