Home / 87,861.07-131,790.43-21,301.80

Finding the Fourth Proportional to 87,861.07, 131,790.43 and 21,301.80

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Solution

The fourth proportional to 87,861.07, 131,790.43 and 21,301.80 is: 31,952.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.07 : 131,790.43 = 21,301.80 : x
  2. Step 2: Convert to fraction form
    87,861.07/131,790.43 = 21,301.80/x
  3. Step 3: Cross multiply
    87,861.07x = 131,790.43 × 21,301.80
  4. Step 4: Simplify right side
    87,861.07x = 2,807,373,381.77
  5. Step 5: Solve for x
    x = 2,807,373,381.77/87,861.07
  6. Step 6: Final answer
    x = 31,952.42

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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.