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Finding the Fourth Proportional to 71,791.44, 107,702.49 and 21,875.52

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Solution

The fourth proportional to 71,791.44, 107,702.49 and 21,875.52 is: 32,817.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,791.44 : 107,702.49 = 21,875.52 : x
  2. Step 2: Convert to fraction form
    71,791.44/107,702.49 = 21,875.52/x
  3. Step 3: Cross multiply
    71,791.44x = 107,702.49 × 21,875.52
  4. Step 4: Simplify right side
    71,791.44x = 2,356,047,974.04
  5. Step 5: Solve for x
    x = 2,356,047,974.04/71,791.44
  6. Step 6: Final answer
    x = 32,817.95

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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.