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Finding the Fourth Proportional to 86,805.85, 130,218 and 27,627.69

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Solution

The fourth proportional to 86,805.85, 130,218 and 27,627.69 is: 41,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.85 : 130,218 = 27,627.69 : x
  2. Step 2: Convert to fraction form
    86,805.85/130,218 = 27,627.69/x
  3. Step 3: Cross multiply
    86,805.85x = 130,218 × 27,627.69
  4. Step 4: Simplify right side
    86,805.85x = 3,597,622,536.42
  5. Step 5: Solve for x
    x = 3,597,622,536.42/86,805.85
  6. Step 6: Final answer
    x = 41,444.47

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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.