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Finding the Fourth Proportional to 87,371, 131,056.56 and 21,707

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Solution

The fourth proportional to 87,371, 131,056.56 and 21,707 is: 32,560.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,371 : 131,056.56 = 21,707 : x
  2. Step 2: Convert to fraction form
    87,371/131,056.56 = 21,707/x
  3. Step 3: Cross multiply
    87,371x = 131,056.56 × 21,707
  4. Step 4: Simplify right side
    87,371x = 2,844,844,747.92
  5. Step 5: Solve for x
    x = 2,844,844,747.92/87,371
  6. Step 6: Final answer
    x = 32,560.51

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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.