Home / 87,967.88-131,950.70-21,408.12

Finding the Fourth Proportional to 87,967.88, 131,950.70 and 21,408.12

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Solution

The fourth proportional to 87,967.88, 131,950.70 and 21,408.12 is: 32,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,967.88 : 131,950.70 = 21,408.12 : x
  2. Step 2: Convert to fraction form
    87,967.88/131,950.70 = 21,408.12/x
  3. Step 3: Cross multiply
    87,967.88x = 131,950.70 × 21,408.12
  4. Step 4: Simplify right side
    87,967.88x = 2,824,816,419.68
  5. Step 5: Solve for x
    x = 2,824,816,419.68/87,967.88
  6. Step 6: Final answer
    x = 32,111.91

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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.