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Finding the Fourth Proportional to 87,603.50, 131,407.68 and 25,274

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Solution

The fourth proportional to 87,603.50, 131,407.68 and 25,274 is: 37,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,603.50 : 131,407.68 = 25,274 : x
  2. Step 2: Convert to fraction form
    87,603.50/131,407.68 = 25,274/x
  3. Step 3: Cross multiply
    87,603.50x = 131,407.68 × 25,274
  4. Step 4: Simplify right side
    87,603.50x = 3,321,197,704.32
  5. Step 5: Solve for x
    x = 3,321,197,704.32/87,603.50
  6. Step 6: Final answer
    x = 37,911.70

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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.