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Finding the Fourth Proportional to 68,700.24, 103,050 and 21,942

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Solution

The fourth proportional to 68,700.24, 103,050 and 21,942 is: 32,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,700.24 : 103,050 = 21,942 : x
  2. Step 2: Convert to fraction form
    68,700.24/103,050 = 21,942/x
  3. Step 3: Cross multiply
    68,700.24x = 103,050 × 21,942
  4. Step 4: Simplify right side
    68,700.24x = 2,261,123,100
  5. Step 5: Solve for x
    x = 2,261,123,100/68,700.24
  6. Step 6: Final answer
    x = 32,912.89

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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.