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Finding the Fourth Proportional to 71,729.88, 107,600.84 and 21,810.41

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Solution

The fourth proportional to 71,729.88, 107,600.84 and 21,810.41 is: 32,717.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,729.88 : 107,600.84 = 21,810.41 : x
  2. Step 2: Convert to fraction form
    71,729.88/107,600.84 = 21,810.41/x
  3. Step 3: Cross multiply
    71,729.88x = 107,600.84 × 21,810.41
  4. Step 4: Simplify right side
    71,729.88x = 2,346,818,274.98
  5. Step 5: Solve for x
    x = 2,346,818,274.98/71,729.88
  6. Step 6: Final answer
    x = 32,717.44

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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.