Home / 86,564.20-129,749.10-36,635.80

Finding the Fourth Proportional to 86,564.20, 129,749.10 and 36,635.80

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Solution

The fourth proportional to 86,564.20, 129,749.10 and 36,635.80 is: 54,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,564.20 : 129,749.10 = 36,635.80 : x
  2. Step 2: Convert to fraction form
    86,564.20/129,749.10 = 36,635.80/x
  3. Step 3: Cross multiply
    86,564.20x = 129,749.10 × 36,635.80
  4. Step 4: Simplify right side
    86,564.20x = 4,753,462,077.78
  5. Step 5: Solve for x
    x = 4,753,462,077.78/86,564.20
  6. Step 6: Final answer
    x = 54,912.56

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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.