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Finding the Fourth Proportional to 72,634.92, 108,974.26 and 25,881.72

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Solution

The fourth proportional to 72,634.92, 108,974.26 and 25,881.72 is: 38,830.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.92 : 108,974.26 = 25,881.72 : x
  2. Step 2: Convert to fraction form
    72,634.92/108,974.26 = 25,881.72/x
  3. Step 3: Cross multiply
    72,634.92x = 108,974.26 × 25,881.72
  4. Step 4: Simplify right side
    72,634.92x = 2,820,441,284.53
  5. Step 5: Solve for x
    x = 2,820,441,284.53/72,634.92
  6. Step 6: Final answer
    x = 38,830.38

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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.