Home / 87,577.16-131,384.19-28,408.21

Finding the Fourth Proportional to 87,577.16, 131,384.19 and 28,408.21

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Solution

The fourth proportional to 87,577.16, 131,384.19 and 28,408.21 is: 42,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,577.16 : 131,384.19 = 28,408.21 : x
  2. Step 2: Convert to fraction form
    87,577.16/131,384.19 = 28,408.21/x
  3. Step 3: Cross multiply
    87,577.16x = 131,384.19 × 28,408.21
  4. Step 4: Simplify right side
    87,577.16x = 3,732,389,660.20
  5. Step 5: Solve for x
    x = 3,732,389,660.20/87,577.16
  6. Step 6: Final answer
    x = 42,618.30

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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.