Home / 87,820.96-131,735.68-28,656.56

Finding the Fourth Proportional to 87,820.96, 131,735.68 and 28,656.56

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Solution

The fourth proportional to 87,820.96, 131,735.68 and 28,656.56 is: 42,986.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,820.96 : 131,735.68 = 28,656.56 : x
  2. Step 2: Convert to fraction form
    87,820.96/131,735.68 = 28,656.56/x
  3. Step 3: Cross multiply
    87,820.96x = 131,735.68 × 28,656.56
  4. Step 4: Simplify right side
    87,820.96x = 3,775,091,418.06
  5. Step 5: Solve for x
    x = 3,775,091,418.06/87,820.96
  6. Step 6: Final answer
    x = 42,986.22

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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.