Home / 86,857.65-130,296.20-27,679.86

Finding the Fourth Proportional to 86,857.65, 130,296.20 and 27,679.86

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Solution

The fourth proportional to 86,857.65, 130,296.20 and 27,679.86 is: 41,522.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,857.65 : 130,296.20 = 27,679.86 : x
  2. Step 2: Convert to fraction form
    86,857.65/130,296.20 = 27,679.86/x
  3. Step 3: Cross multiply
    86,857.65x = 130,296.20 × 27,679.86
  4. Step 4: Simplify right side
    86,857.65x = 3,606,580,436.13
  5. Step 5: Solve for x
    x = 3,606,580,436.13/86,857.65
  6. Step 6: Final answer
    x = 41,522.89

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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.