Home / 86,991.74-120,057.06-48,757.80

Finding the Fourth Proportional to 86,991.74, 120,057.06 and 48,757.80

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Solution

The fourth proportional to 86,991.74, 120,057.06 and 48,757.80 is: 67,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,991.74 : 120,057.06 = 48,757.80 : x
  2. Step 2: Convert to fraction form
    86,991.74/120,057.06 = 48,757.80/x
  3. Step 3: Cross multiply
    86,991.74x = 120,057.06 × 48,757.80
  4. Step 4: Simplify right side
    86,991.74x = 5,853,718,120.07
  5. Step 5: Solve for x
    x = 5,853,718,120.07/86,991.74
  6. Step 6: Final answer
    x = 67,290.51

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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.