Home / 87,511.14-120,780.45-50,712.20

Finding the Fourth Proportional to 87,511.14, 120,780.45 and 50,712.20

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Solution

The fourth proportional to 87,511.14, 120,780.45 and 50,712.20 is: 69,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,511.14 : 120,780.45 = 50,712.20 : x
  2. Step 2: Convert to fraction form
    87,511.14/120,780.45 = 50,712.20/x
  3. Step 3: Cross multiply
    87,511.14x = 120,780.45 × 50,712.20
  4. Step 4: Simplify right side
    87,511.14x = 6,125,042,336.49
  5. Step 5: Solve for x
    x = 6,125,042,336.49/87,511.14
  6. Step 6: Final answer
    x = 69,991.57

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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.