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Finding the Fourth Proportional to 87,967.20, 131,950.92 and 21,406.92

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Solution

The fourth proportional to 87,967.20, 131,950.92 and 21,406.92 is: 32,110.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,967.20 : 131,950.92 = 21,406.92 : x
  2. Step 2: Convert to fraction form
    87,967.20/131,950.92 = 21,406.92/x
  3. Step 3: Cross multiply
    87,967.20x = 131,950.92 × 21,406.92
  4. Step 4: Simplify right side
    87,967.20x = 2,824,662,788.37
  5. Step 5: Solve for x
    x = 2,824,662,788.37/87,967.20
  6. Step 6: Final answer
    x = 32,110.41

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1.5x scale

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.