Home / 87,418.64-120,636.48-49,175.28

Finding the Fourth Proportional to 87,418.64, 120,636.48 and 49,175.28

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Solution

The fourth proportional to 87,418.64, 120,636.48 and 49,175.28 is: 67,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,418.64 : 120,636.48 = 49,175.28 : x
  2. Step 2: Convert to fraction form
    87,418.64/120,636.48 = 49,175.28/x
  3. Step 3: Cross multiply
    87,418.64x = 120,636.48 × 49,175.28
  4. Step 4: Simplify right side
    87,418.64x = 5,932,332,682.21
  5. Step 5: Solve for x
    x = 5,932,332,682.21/87,418.64
  6. Step 6: Final answer
    x = 67,861.19

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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.