Home / 86,555.21-129,812.76-27,379.85

Finding the Fourth Proportional to 86,555.21, 129,812.76 and 27,379.85

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Solution

The fourth proportional to 86,555.21, 129,812.76 and 27,379.85 is: 41,063.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,555.21 : 129,812.76 = 27,379.85 : x
  2. Step 2: Convert to fraction form
    86,555.21/129,812.76 = 27,379.85/x
  3. Step 3: Cross multiply
    86,555.21x = 129,812.76 × 27,379.85
  4. Step 4: Simplify right side
    86,555.21x = 3,554,253,247.82
  5. Step 5: Solve for x
    x = 3,554,253,247.82/86,555.21
  6. Step 6: Final answer
    x = 41,063.43

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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.