Home / 81,238.62-111,999.06-57,006.66

Finding the Fourth Proportional to 81,238.62, 111,999.06 and 57,006.66

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Solution

The fourth proportional to 81,238.62, 111,999.06 and 57,006.66 is: 78,591.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,238.62 : 111,999.06 = 57,006.66 : x
  2. Step 2: Convert to fraction form
    81,238.62/111,999.06 = 57,006.66/x
  3. Step 3: Cross multiply
    81,238.62x = 111,999.06 × 57,006.66
  4. Step 4: Simplify right side
    81,238.62x = 6,384,692,333.74
  5. Step 5: Solve for x
    x = 6,384,692,333.74/81,238.62
  6. Step 6: Final answer
    x = 78,591.84

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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.