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Finding the Fourth Proportional to 80,295.78, 110,860.18 and 51,628.32

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Solution

The fourth proportional to 80,295.78, 110,860.18 and 51,628.32 is: 71,280.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,295.78 : 110,860.18 = 51,628.32 : x
  2. Step 2: Convert to fraction form
    80,295.78/110,860.18 = 51,628.32/x
  3. Step 3: Cross multiply
    80,295.78x = 110,860.18 × 51,628.32
  4. Step 4: Simplify right side
    80,295.78x = 5,723,524,719.23
  5. Step 5: Solve for x
    x = 5,723,524,719.23/80,295.78
  6. Step 6: Final answer
    x = 71,280.51

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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.