Home / 80,028.78-110,432.16-51,297.72

Finding the Fourth Proportional to 80,028.78, 110,432.16 and 51,297.72

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Solution

The fourth proportional to 80,028.78, 110,432.16 and 51,297.72 is: 70,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,028.78 : 110,432.16 = 51,297.72 : x
  2. Step 2: Convert to fraction form
    80,028.78/110,432.16 = 51,297.72/x
  3. Step 3: Cross multiply
    80,028.78x = 110,432.16 × 51,297.72
  4. Step 4: Simplify right side
    80,028.78x = 5,664,918,022.68
  5. Step 5: Solve for x
    x = 5,664,918,022.68/80,028.78
  6. Step 6: Final answer
    x = 70,786.01

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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.