Home / 87,418.45-120,636.16-49,175.11

Finding the Fourth Proportional to 87,418.45, 120,636.16 and 49,175.11

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Solution

The fourth proportional to 87,418.45, 120,636.16 and 49,175.11 is: 67,860.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,418.45 : 120,636.16 = 49,175.11 : x
  2. Step 2: Convert to fraction form
    87,418.45/120,636.16 = 49,175.11/x
  3. Step 3: Cross multiply
    87,418.45x = 120,636.16 × 49,175.11
  4. Step 4: Simplify right side
    87,418.45x = 5,932,296,437.98
  5. Step 5: Solve for x
    x = 5,932,296,437.98/87,418.45
  6. Step 6: Final answer
    x = 67,860.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.