Home / 87,389.82-120,608.21-49,669.74

Finding the Fourth Proportional to 87,389.82, 120,608.21 and 49,669.74

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Solution

The fourth proportional to 87,389.82, 120,608.21 and 49,669.74 is: 68,550.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,389.82 : 120,608.21 = 49,669.74 : x
  2. Step 2: Convert to fraction form
    87,389.82/120,608.21 = 49,669.74/x
  3. Step 3: Cross multiply
    87,389.82x = 120,608.21 × 49,669.74
  4. Step 4: Simplify right side
    87,389.82x = 5,990,578,432.57
  5. Step 5: Solve for x
    x = 5,990,578,432.57/87,389.82
  6. Step 6: Final answer
    x = 68,550.07

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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.