Home / 65,619.09-90,556.05-36,939.80

Finding the Fourth Proportional to 65,619.09, 90,556.05 and 36,939.80

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Solution

The fourth proportional to 65,619.09, 90,556.05 and 36,939.80 is: 50,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,619.09 : 90,556.05 = 36,939.80 : x
  2. Step 2: Convert to fraction form
    65,619.09/90,556.05 = 36,939.80/x
  3. Step 3: Cross multiply
    65,619.09x = 90,556.05 × 36,939.80
  4. Step 4: Simplify right side
    65,619.09x = 3,345,122,375.79
  5. Step 5: Solve for x
    x = 3,345,122,375.79/65,619.09
  6. Step 6: Final answer
    x = 50,977.88

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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.