Home / 80,850.08-121,331.76-45,274.40

Finding the Fourth Proportional to 80,850.08, 121,331.76 and 45,274.40

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Solution

The fourth proportional to 80,850.08, 121,331.76 and 45,274.40 is: 67,943.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,850.08 : 121,331.76 = 45,274.40 : x
  2. Step 2: Convert to fraction form
    80,850.08/121,331.76 = 45,274.40/x
  3. Step 3: Cross multiply
    80,850.08x = 121,331.76 × 45,274.40
  4. Step 4: Simplify right side
    80,850.08x = 5,493,222,634.94
  5. Step 5: Solve for x
    x = 5,493,222,634.94/80,850.08
  6. Step 6: Final answer
    x = 67,943.32

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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.