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Finding the Fourth Proportional to 67,950.88, 101,922.72 and 21,198.40

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Solution

The fourth proportional to 67,950.88, 101,922.72 and 21,198.40 is: 31,796.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,950.88 : 101,922.72 = 21,198.40 : x
  2. Step 2: Convert to fraction form
    67,950.88/101,922.72 = 21,198.40/x
  3. Step 3: Cross multiply
    67,950.88x = 101,922.72 × 21,198.40
  4. Step 4: Simplify right side
    67,950.88x = 2,160,598,587.65
  5. Step 5: Solve for x
    x = 2,160,598,587.65/67,950.88
  6. Step 6: Final answer
    x = 31,796.48

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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.