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Finding the Fourth Proportional to 67,188.16, 100,796.81 and 20,439.82

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Solution

The fourth proportional to 67,188.16, 100,796.81 and 20,439.82 is: 30,664.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,188.16 : 100,796.81 = 20,439.82 : x
  2. Step 2: Convert to fraction form
    67,188.16/100,796.81 = 20,439.82/x
  3. Step 3: Cross multiply
    67,188.16x = 100,796.81 × 20,439.82
  4. Step 4: Simplify right side
    67,188.16x = 2,060,268,652.97
  5. Step 5: Solve for x
    x = 2,060,268,652.97/67,188.16
  6. Step 6: Final answer
    x = 30,664.16

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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.