Home / 87,286.41-120,460.40-65,738.15

Finding the Fourth Proportional to 87,286.41, 120,460.40 and 65,738.15

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Solution

The fourth proportional to 87,286.41, 120,460.40 and 65,738.15 is: 90,722.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,286.41 : 120,460.40 = 65,738.15 : x
  2. Step 2: Convert to fraction form
    87,286.41/120,460.40 = 65,738.15/x
  3. Step 3: Cross multiply
    87,286.41x = 120,460.40 × 65,738.15
  4. Step 4: Simplify right side
    87,286.41x = 7,918,843,611.51
  5. Step 5: Solve for x
    x = 7,918,843,611.51/87,286.41
  6. Step 6: Final answer
    x = 90,722.53

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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.