Home / 87,757.90-131,647.78-28,577.68

Finding the Fourth Proportional to 87,757.90, 131,647.78 and 28,577.68

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Solution

The fourth proportional to 87,757.90, 131,647.78 and 28,577.68 is: 42,870.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,757.90 : 131,647.78 = 28,577.68 : x
  2. Step 2: Convert to fraction form
    87,757.90/131,647.78 = 28,577.68/x
  3. Step 3: Cross multiply
    87,757.90x = 131,647.78 × 28,577.68
  4. Step 4: Simplify right side
    87,757.90x = 3,762,187,836.15
  5. Step 5: Solve for x
    x = 3,762,187,836.15/87,757.90
  6. Step 6: Final answer
    x = 42,870.08

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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.