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Finding the Fourth Proportional to 80,850.40, 111,542.88 and 49,007.68

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Solution

The fourth proportional to 80,850.40, 111,542.88 and 49,007.68 is: 67,612.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,850.40 : 111,542.88 = 49,007.68 : x
  2. Step 2: Convert to fraction form
    80,850.40/111,542.88 = 49,007.68/x
  3. Step 3: Cross multiply
    80,850.40x = 111,542.88 × 49,007.68
  4. Step 4: Simplify right side
    80,850.40x = 5,466,457,769.32
  5. Step 5: Solve for x
    x = 5,466,457,769.32/80,850.40
  6. Step 6: Final answer
    x = 67,612.01

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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.