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Finding the Fourth Proportional to 71,163.32, 106,746.90 and 18,571.64

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Solution

The fourth proportional to 71,163.32, 106,746.90 and 18,571.64 is: 27,857.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,163.32 : 106,746.90 = 18,571.64 : x
  2. Step 2: Convert to fraction form
    71,163.32/106,746.90 = 18,571.64/x
  3. Step 3: Cross multiply
    71,163.32x = 106,746.90 × 18,571.64
  4. Step 4: Simplify right side
    71,163.32x = 1,982,464,997.92
  5. Step 5: Solve for x
    x = 1,982,464,997.92/71,163.32
  6. Step 6: Final answer
    x = 27,857.96

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1.5x scale

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.