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Finding the Fourth Proportional to 86,679.88, 130,035.96 and 27,499.60

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Solution

The fourth proportional to 86,679.88, 130,035.96 and 27,499.60 is: 41,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,679.88 : 130,035.96 = 27,499.60 : x
  2. Step 2: Convert to fraction form
    86,679.88/130,035.96 = 27,499.60/x
  3. Step 3: Cross multiply
    86,679.88x = 130,035.96 × 27,499.60
  4. Step 4: Simplify right side
    86,679.88x = 3,575,936,885.62
  5. Step 5: Solve for x
    x = 3,575,936,885.62/86,679.88
  6. Step 6: Final answer
    x = 41,254.52

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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.