Home / 67,164.10-100,742.50-20,413.33

Finding the Fourth Proportional to 67,164.10, 100,742.50 and 20,413.33

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Solution

The fourth proportional to 67,164.10, 100,742.50 and 20,413.33 is: 30,618.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,164.10 : 100,742.50 = 20,413.33 : x
  2. Step 2: Convert to fraction form
    67,164.10/100,742.50 = 20,413.33/x
  3. Step 3: Cross multiply
    67,164.10x = 100,742.50 × 20,413.33
  4. Step 4: Simplify right side
    67,164.10x = 2,056,489,746.91
  5. Step 5: Solve for x
    x = 2,056,489,746.91/67,164.10
  6. Step 6: Final answer
    x = 30,618.88

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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.