Home / 51,777.78-77,696.16-20,183.72

Finding the Fourth Proportional to 51,777.78, 77,696.16 and 20,183.72

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Solution

The fourth proportional to 51,777.78, 77,696.16 and 20,183.72 is: 30,287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,777.78 : 77,696.16 = 20,183.72 : x
  2. Step 2: Convert to fraction form
    51,777.78/77,696.16 = 20,183.72/x
  3. Step 3: Cross multiply
    51,777.78x = 77,696.16 × 20,183.72
  4. Step 4: Simplify right side
    51,777.78x = 1,568,197,538.52
  5. Step 5: Solve for x
    x = 1,568,197,538.52/51,777.78
  6. Step 6: Final answer
    x = 30,287.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.