Home / 87,735.35-131,603.03-21,175.43

Finding the Fourth Proportional to 87,735.35, 131,603.03 and 21,175.43

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Solution

The fourth proportional to 87,735.35, 131,603.03 and 21,175.43 is: 31,763.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,735.35 : 131,603.03 = 21,175.43 : x
  2. Step 2: Convert to fraction form
    87,735.35/131,603.03 = 21,175.43/x
  3. Step 3: Cross multiply
    87,735.35x = 131,603.03 × 21,175.43
  4. Step 4: Simplify right side
    87,735.35x = 2,786,750,065.07
  5. Step 5: Solve for x
    x = 2,786,750,065.07/87,735.35
  6. Step 6: Final answer
    x = 31,763.14

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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.