Home / 87,419.97-120,628.22-49,178.23

Finding the Fourth Proportional to 87,419.97, 120,628.22 and 49,178.23

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Solution

The fourth proportional to 87,419.97, 120,628.22 and 49,178.23 is: 67,859.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,419.97 : 120,628.22 = 49,178.23 : x
  2. Step 2: Convert to fraction form
    87,419.97/120,628.22 = 49,178.23/x
  3. Step 3: Cross multiply
    87,419.97x = 120,628.22 × 49,178.23
  4. Step 4: Simplify right side
    87,419.97x = 5,932,281,800.19
  5. Step 5: Solve for x
    x = 5,932,281,800.19/87,419.97
  6. Step 6: Final answer
    x = 67,859.57

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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.