Home / 86,579.67-129,882.49-30,409.88

Finding the Fourth Proportional to 86,579.67, 129,882.49 and 30,409.88

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Solution

The fourth proportional to 86,579.67, 129,882.49 and 30,409.88 is: 45,619.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,579.67 : 129,882.49 = 30,409.88 : x
  2. Step 2: Convert to fraction form
    86,579.67/129,882.49 = 30,409.88/x
  3. Step 3: Cross multiply
    86,579.67x = 129,882.49 × 30,409.88
  4. Step 4: Simplify right side
    86,579.67x = 3,949,710,133.54
  5. Step 5: Solve for x
    x = 3,949,710,133.54/86,579.67
  6. Step 6: Final answer
    x = 45,619.37

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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.