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Finding the Fourth Proportional to 70,694.88, 106,059.21 and 20,773.87

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Solution

The fourth proportional to 70,694.88, 106,059.21 and 20,773.87 is: 31,165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.88 : 106,059.21 = 20,773.87 : x
  2. Step 2: Convert to fraction form
    70,694.88/106,059.21 = 20,773.87/x
  3. Step 3: Cross multiply
    70,694.88x = 106,059.21 × 20,773.87
  4. Step 4: Simplify right side
    70,694.88x = 2,203,259,897.79
  5. Step 5: Solve for x
    x = 2,203,259,897.79/70,694.88
  6. Step 6: Final answer
    x = 31,165.76

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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.