Home / 87,520.69-120,779.27-49,797.37

Finding the Fourth Proportional to 87,520.69, 120,779.27 and 49,797.37

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Solution

The fourth proportional to 87,520.69, 120,779.27 and 49,797.37 is: 68,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,520.69 : 120,779.27 = 49,797.37 : x
  2. Step 2: Convert to fraction form
    87,520.69/120,779.27 = 49,797.37/x
  3. Step 3: Cross multiply
    87,520.69x = 120,779.27 × 49,797.37
  4. Step 4: Simplify right side
    87,520.69x = 6,014,489,996.52
  5. Step 5: Solve for x
    x = 6,014,489,996.52/87,520.69
  6. Step 6: Final answer
    x = 68,720.78

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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.