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Finding the Fourth Proportional to 67,670.52, 101,505.78 and 20,922.36

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Solution

The fourth proportional to 67,670.52, 101,505.78 and 20,922.36 is: 31,383.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,670.52 : 101,505.78 = 20,922.36 : x
  2. Step 2: Convert to fraction form
    67,670.52/101,505.78 = 20,922.36/x
  3. Step 3: Cross multiply
    67,670.52x = 101,505.78 × 20,922.36
  4. Step 4: Simplify right side
    67,670.52x = 2,123,740,471.24
  5. Step 5: Solve for x
    x = 2,123,740,471.24/67,670.52
  6. Step 6: Final answer
    x = 31,383.54

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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.