Home / 86,371.31-129,544.21-27,221.47

Finding the Fourth Proportional to 86,371.31, 129,544.21 and 27,221.47

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Solution

The fourth proportional to 86,371.31, 129,544.21 and 27,221.47 is: 40,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,371.31 : 129,544.21 = 27,221.47 : x
  2. Step 2: Convert to fraction form
    86,371.31/129,544.21 = 27,221.47/x
  3. Step 3: Cross multiply
    86,371.31x = 129,544.21 × 27,221.47
  4. Step 4: Simplify right side
    86,371.31x = 3,526,383,536.36
  5. Step 5: Solve for x
    x = 3,526,383,536.36/86,371.31
  6. Step 6: Final answer
    x = 40,828.18

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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.