Home / 87,109.83-120,263.10-54,872.09

Finding the Fourth Proportional to 87,109.83, 120,263.10 and 54,872.09

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Solution

The fourth proportional to 87,109.83, 120,263.10 and 54,872.09 is: 75,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,109.83 : 120,263.10 = 54,872.09 : x
  2. Step 2: Convert to fraction form
    87,109.83/120,263.10 = 54,872.09/x
  3. Step 3: Cross multiply
    87,109.83x = 120,263.10 × 54,872.09
  4. Step 4: Simplify right side
    87,109.83x = 6,599,087,646.88
  5. Step 5: Solve for x
    x = 6,599,087,646.88/87,109.83
  6. Step 6: Final answer
    x = 75,755.95

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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.