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Finding the Fourth Proportional to 67,438.88, 101,163.17 and 25,885.88

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Solution

The fourth proportional to 67,438.88, 101,163.17 and 25,885.88 is: 38,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,438.88 : 101,163.17 = 25,885.88 : x
  2. Step 2: Convert to fraction form
    67,438.88/101,163.17 = 25,885.88/x
  3. Step 3: Cross multiply
    67,438.88x = 101,163.17 × 25,885.88
  4. Step 4: Simplify right side
    67,438.88x = 2,618,697,679.04
  5. Step 5: Solve for x
    x = 2,618,697,679.04/67,438.88
  6. Step 6: Final answer
    x = 38,830.68

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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.