Home / 80,682.78-111,295.98-66,993.36

Finding the Fourth Proportional to 80,682.78, 111,295.98 and 66,993.36

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Solution

The fourth proportional to 80,682.78, 111,295.98 and 66,993.36 is: 92,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,682.78 : 111,295.98 = 66,993.36 : x
  2. Step 2: Convert to fraction form
    80,682.78/111,295.98 = 66,993.36/x
  3. Step 3: Cross multiply
    80,682.78x = 111,295.98 × 66,993.36
  4. Step 4: Simplify right side
    80,682.78x = 7,456,091,654.69
  5. Step 5: Solve for x
    x = 7,456,091,654.69/80,682.78
  6. Step 6: Final answer
    x = 92,412.43

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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.