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Finding the Fourth Proportional to 87,337, 131,005.50 and 21,673

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Solution

The fourth proportional to 87,337, 131,005.50 and 21,673 is: 32,509.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,337 : 131,005.50 = 21,673 : x
  2. Step 2: Convert to fraction form
    87,337/131,005.50 = 21,673/x
  3. Step 3: Cross multiply
    87,337x = 131,005.50 × 21,673
  4. Step 4: Simplify right side
    87,337x = 2,839,282,201.50
  5. Step 5: Solve for x
    x = 2,839,282,201.50/87,337
  6. Step 6: Final answer
    x = 32,509.50

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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.