Home / 87,458.97-120,682.64-55,181.41

Finding the Fourth Proportional to 87,458.97, 120,682.64 and 55,181.41

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Solution

The fourth proportional to 87,458.97, 120,682.64 and 55,181.41 is: 76,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,458.97 : 120,682.64 = 55,181.41 : x
  2. Step 2: Convert to fraction form
    87,458.97/120,682.64 = 55,181.41/x
  3. Step 3: Cross multiply
    87,458.97x = 120,682.64 × 55,181.41
  4. Step 4: Simplify right side
    87,458.97x = 6,659,438,263.52
  5. Step 5: Solve for x
    x = 6,659,438,263.52/87,458.97
  6. Step 6: Final answer
    x = 76,143.57

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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.