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Finding the Fourth Proportional to 71,156.96, 106,747.04 and 21,908.96

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Solution

The fourth proportional to 71,156.96, 106,747.04 and 21,908.96 is: 32,867.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,156.96 : 106,747.04 = 21,908.96 : x
  2. Step 2: Convert to fraction form
    71,156.96/106,747.04 = 21,908.96/x
  3. Step 3: Cross multiply
    71,156.96x = 106,747.04 × 21,908.96
  4. Step 4: Simplify right side
    71,156.96x = 2,338,716,629.48
  5. Step 5: Solve for x
    x = 2,338,716,629.48/71,156.96
  6. Step 6: Final answer
    x = 32,867.01

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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.