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Finding the Fourth Proportional to 87,993.08, 121,418.84 and 49,757.84

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Solution

The fourth proportional to 87,993.08, 121,418.84 and 49,757.84 is: 68,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,993.08 : 121,418.84 = 49,757.84 : x
  2. Step 2: Convert to fraction form
    87,993.08/121,418.84 = 49,757.84/x
  3. Step 3: Cross multiply
    87,993.08x = 121,418.84 × 49,757.84
  4. Step 4: Simplify right side
    87,993.08x = 6,041,539,213.71
  5. Step 5: Solve for x
    x = 6,041,539,213.71/87,993.08
  6. Step 6: Final answer
    x = 68,659.25

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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.