Home / 86,403.30-129,605.55-27,243.73

Finding the Fourth Proportional to 86,403.30, 129,605.55 and 27,243.73

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Solution

The fourth proportional to 86,403.30, 129,605.55 and 27,243.73 is: 40,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,403.30 : 129,605.55 = 27,243.73 : x
  2. Step 2: Convert to fraction form
    86,403.30/129,605.55 = 27,243.73/x
  3. Step 3: Cross multiply
    86,403.30x = 129,605.55 × 27,243.73
  4. Step 4: Simplify right side
    86,403.30x = 3,530,938,610.70
  5. Step 5: Solve for x
    x = 3,530,938,610.70/86,403.30
  6. Step 6: Final answer
    x = 40,865.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.