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Finding the Fourth Proportional to 67,397.63, 101,092.80 and 20,650.64

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Solution

The fourth proportional to 67,397.63, 101,092.80 and 20,650.64 is: 30,974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,397.63 : 101,092.80 = 20,650.64 : x
  2. Step 2: Convert to fraction form
    67,397.63/101,092.80 = 20,650.64/x
  3. Step 3: Cross multiply
    67,397.63x = 101,092.80 × 20,650.64
  4. Step 4: Simplify right side
    67,397.63x = 2,087,631,323.75
  5. Step 5: Solve for x
    x = 2,087,631,323.75/67,397.63
  6. Step 6: Final answer
    x = 30,974.85

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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.