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Finding the Fourth Proportional to 71,963.41, 107,945.02 and 19,372.95

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Solution

The fourth proportional to 71,963.41, 107,945.02 and 19,372.95 is: 29,059.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,963.41 : 107,945.02 = 19,372.95 : x
  2. Step 2: Convert to fraction form
    71,963.41/107,945.02 = 19,372.95/x
  3. Step 3: Cross multiply
    71,963.41x = 107,945.02 × 19,372.95
  4. Step 4: Simplify right side
    71,963.41x = 2,091,213,475.21
  5. Step 5: Solve for x
    x = 2,091,213,475.21/71,963.41
  6. Step 6: Final answer
    x = 29,059.40

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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.