Home / 87,855.45-131,782.01-21,296.16

Finding the Fourth Proportional to 87,855.45, 131,782.01 and 21,296.16

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Solution

The fourth proportional to 87,855.45, 131,782.01 and 21,296.16 is: 31,943.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.45 : 131,782.01 = 21,296.16 : x
  2. Step 2: Convert to fraction form
    87,855.45/131,782.01 = 21,296.16/x
  3. Step 3: Cross multiply
    87,855.45x = 131,782.01 × 21,296.16
  4. Step 4: Simplify right side
    87,855.45x = 2,806,450,663.60
  5. Step 5: Solve for x
    x = 2,806,450,663.60/87,855.45
  6. Step 6: Final answer
    x = 31,943.96

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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.