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Finding the Fourth Proportional to 71,241.53, 106,883.69 and 21,323.25

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Solution

The fourth proportional to 71,241.53, 106,883.69 and 21,323.25 is: 31,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,241.53 : 106,883.69 = 21,323.25 : x
  2. Step 2: Convert to fraction form
    71,241.53/106,883.69 = 21,323.25/x
  3. Step 3: Cross multiply
    71,241.53x = 106,883.69 × 21,323.25
  4. Step 4: Simplify right side
    71,241.53x = 2,279,107,536.18
  5. Step 5: Solve for x
    x = 2,279,107,536.18/71,241.53
  6. Step 6: Final answer
    x = 31,991.28

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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.