Home / 81,228.62-111,985.26-56,996.66

Finding the Fourth Proportional to 81,228.62, 111,985.26 and 56,996.66

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Solution

The fourth proportional to 81,228.62, 111,985.26 and 56,996.66 is: 78,578.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,228.62 : 111,985.26 = 56,996.66 : x
  2. Step 2: Convert to fraction form
    81,228.62/111,985.26 = 56,996.66/x
  3. Step 3: Cross multiply
    81,228.62x = 111,985.26 × 56,996.66
  4. Step 4: Simplify right side
    81,228.62x = 6,382,785,789.23
  5. Step 5: Solve for x
    x = 6,382,785,789.23/81,228.62
  6. Step 6: Final answer
    x = 78,578.04

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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.