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Finding the Fourth Proportional to 45,418.60, 68,136.04 and 18,764.60

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Solution

The fourth proportional to 45,418.60, 68,136.04 and 18,764.60 is: 28,150.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,418.60 : 68,136.04 = 18,764.60 : x
  2. Step 2: Convert to fraction form
    45,418.60/68,136.04 = 18,764.60/x
  3. Step 3: Cross multiply
    45,418.60x = 68,136.04 × 18,764.60
  4. Step 4: Simplify right side
    45,418.60x = 1,278,545,536.18
  5. Step 5: Solve for x
    x = 1,278,545,536.18/45,418.60
  6. Step 6: Final answer
    x = 28,150.26

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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.