Home / 87,611.58-120,865.83-53,621.58

Finding the Fourth Proportional to 87,611.58, 120,865.83 and 53,621.58

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Solution

The fourth proportional to 87,611.58, 120,865.83 and 53,621.58 is: 73,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,611.58 : 120,865.83 = 53,621.58 : x
  2. Step 2: Convert to fraction form
    87,611.58/120,865.83 = 53,621.58/x
  3. Step 3: Cross multiply
    87,611.58x = 120,865.83 × 53,621.58
  4. Step 4: Simplify right side
    87,611.58x = 6,481,016,772.61
  5. Step 5: Solve for x
    x = 6,481,016,772.61/87,611.58
  6. Step 6: Final answer
    x = 73,974.43

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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.