Home / 87,170.32-120,320.82-51,371.80

Finding the Fourth Proportional to 87,170.32, 120,320.82 and 51,371.80

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Solution

The fourth proportional to 87,170.32, 120,320.82 and 51,371.80 is: 70,908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,170.32 : 120,320.82 = 51,371.80 : x
  2. Step 2: Convert to fraction form
    87,170.32/120,320.82 = 51,371.80/x
  3. Step 3: Cross multiply
    87,170.32x = 120,320.82 × 51,371.80
  4. Step 4: Simplify right side
    87,170.32x = 6,181,097,100.88
  5. Step 5: Solve for x
    x = 6,181,097,100.88/87,170.32
  6. Step 6: Final answer
    x = 70,908.28

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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.