Home / 87,512.38-120,767.69-49,786.63

Finding the Fourth Proportional to 87,512.38, 120,767.69 and 49,786.63

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Solution

The fourth proportional to 87,512.38, 120,767.69 and 49,786.63 is: 68,705.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,512.38 : 120,767.69 = 49,786.63 : x
  2. Step 2: Convert to fraction form
    87,512.38/120,767.69 = 49,786.63/x
  3. Step 3: Cross multiply
    87,512.38x = 120,767.69 × 49,786.63
  4. Step 4: Simplify right side
    87,512.38x = 6,012,616,297.98
  5. Step 5: Solve for x
    x = 6,012,616,297.98/87,512.38
  6. Step 6: Final answer
    x = 68,705.89

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1.5x scale

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.