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Finding the Fourth Proportional to 71,963.60, 107,945.40 and 25,211.60

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Solution

The fourth proportional to 71,963.60, 107,945.40 and 25,211.60 is: 37,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,963.60 : 107,945.40 = 25,211.60 : x
  2. Step 2: Convert to fraction form
    71,963.60/107,945.40 = 25,211.60/x
  3. Step 3: Cross multiply
    71,963.60x = 107,945.40 × 25,211.60
  4. Step 4: Simplify right side
    71,963.60x = 2,721,476,246.64
  5. Step 5: Solve for x
    x = 2,721,476,246.64/71,963.60
  6. Step 6: Final answer
    x = 37,817.40

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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.