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Finding the Fourth Proportional to 80,969.87, 111,738.57 and 45,162.19

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Solution

The fourth proportional to 80,969.87, 111,738.57 and 45,162.19 is: 62,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,969.87 : 111,738.57 = 45,162.19 : x
  2. Step 2: Convert to fraction form
    80,969.87/111,738.57 = 45,162.19/x
  3. Step 3: Cross multiply
    80,969.87x = 111,738.57 × 45,162.19
  4. Step 4: Simplify right side
    80,969.87x = 5,046,358,528.67
  5. Step 5: Solve for x
    x = 5,046,358,528.67/80,969.87
  6. Step 6: Final answer
    x = 62,323.91

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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.