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Finding the Fourth Proportional to 67,951.88, 101,924.22 and 21,199.40

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Solution

The fourth proportional to 67,951.88, 101,924.22 and 21,199.40 is: 31,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,951.88 : 101,924.22 = 21,199.40 : x
  2. Step 2: Convert to fraction form
    67,951.88/101,924.22 = 21,199.40/x
  3. Step 3: Cross multiply
    67,951.88x = 101,924.22 × 21,199.40
  4. Step 4: Simplify right side
    67,951.88x = 2,160,732,309.47
  5. Step 5: Solve for x
    x = 2,160,732,309.47/67,951.88
  6. Step 6: Final answer
    x = 31,797.98

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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.