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Finding the Fourth Proportional to 73,671.76, 110,491.98 and 21,067.12

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Solution

The fourth proportional to 73,671.76, 110,491.98 and 21,067.12 is: 31,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,671.76 : 110,491.98 = 21,067.12 : x
  2. Step 2: Convert to fraction form
    73,671.76/110,491.98 = 21,067.12/x
  3. Step 3: Cross multiply
    73,671.76x = 110,491.98 × 21,067.12
  4. Step 4: Simplify right side
    73,671.76x = 2,327,747,801.70
  5. Step 5: Solve for x
    x = 2,327,747,801.70/73,671.76
  6. Step 6: Final answer
    x = 31,596.20

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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.