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Finding the Fourth Proportional to 67,174.58, 100,745.72 and 19,776.77

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Solution

The fourth proportional to 67,174.58, 100,745.72 and 19,776.77 is: 29,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,174.58 : 100,745.72 = 19,776.77 : x
  2. Step 2: Convert to fraction form
    67,174.58/100,745.72 = 19,776.77/x
  3. Step 3: Cross multiply
    67,174.58x = 100,745.72 × 19,776.77
  4. Step 4: Simplify right side
    67,174.58x = 1,992,425,460.21
  5. Step 5: Solve for x
    x = 1,992,425,460.21/67,174.58
  6. Step 6: Final answer
    x = 29,660.41

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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.