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Finding the Fourth Proportional to 86,819.60, 130,243.80 and 34,230.80

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Solution

The fourth proportional to 86,819.60, 130,243.80 and 34,230.80 is: 51,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,819.60 : 130,243.80 = 34,230.80 : x
  2. Step 2: Convert to fraction form
    86,819.60/130,243.80 = 34,230.80/x
  3. Step 3: Cross multiply
    86,819.60x = 130,243.80 × 34,230.80
  4. Step 4: Simplify right side
    86,819.60x = 4,458,349,469.04
  5. Step 5: Solve for x
    x = 4,458,349,469.04/86,819.60
  6. Step 6: Final answer
    x = 51,351.88

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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.