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Finding the Fourth Proportional to 80,974.71, 111,687.26 and 70,200.32

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Solution

The fourth proportional to 80,974.71, 111,687.26 and 70,200.32 is: 96,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,974.71 : 111,687.26 = 70,200.32 : x
  2. Step 2: Convert to fraction form
    80,974.71/111,687.26 = 70,200.32/x
  3. Step 3: Cross multiply
    80,974.71x = 111,687.26 × 70,200.32
  4. Step 4: Simplify right side
    80,974.71x = 7,840,481,320.14
  5. Step 5: Solve for x
    x = 7,840,481,320.14/80,974.71
  6. Step 6: Final answer
    x = 96,826.30

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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.