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Finding the Fourth Proportional to 87,672.80, 131,499.44 and 34,364

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Solution

The fourth proportional to 87,672.80, 131,499.44 and 34,364 is: 51,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,672.80 : 131,499.44 = 34,364 : x
  2. Step 2: Convert to fraction form
    87,672.80/131,499.44 = 34,364/x
  3. Step 3: Cross multiply
    87,672.80x = 131,499.44 × 34,364
  4. Step 4: Simplify right side
    87,672.80x = 4,518,846,756.16
  5. Step 5: Solve for x
    x = 4,518,846,756.16/87,672.80
  6. Step 6: Final answer
    x = 51,542.17

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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.