Home / 87,427.10-131,137.53-28,261.22

Finding the Fourth Proportional to 87,427.10, 131,137.53 and 28,261.22

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Solution

The fourth proportional to 87,427.10, 131,137.53 and 28,261.22 is: 42,390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,427.10 : 131,137.53 = 28,261.22 : x
  2. Step 2: Convert to fraction form
    87,427.10/131,137.53 = 28,261.22/x
  3. Step 3: Cross multiply
    87,427.10x = 131,137.53 × 28,261.22
  4. Step 4: Simplify right side
    87,427.10x = 3,706,105,929.90
  5. Step 5: Solve for x
    x = 3,706,105,929.90/87,427.10
  6. Step 6: Final answer
    x = 42,390.82

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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.