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Finding the Fourth Proportional to 45,505.77, 68,245.29 and 15,918.09

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Solution

The fourth proportional to 45,505.77, 68,245.29 and 15,918.09 is: 23,872.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,505.77 : 68,245.29 = 15,918.09 : x
  2. Step 2: Convert to fraction form
    45,505.77/68,245.29 = 15,918.09/x
  3. Step 3: Cross multiply
    45,505.77x = 68,245.29 × 15,918.09
  4. Step 4: Simplify right side
    45,505.77x = 1,086,334,668.30
  5. Step 5: Solve for x
    x = 1,086,334,668.30/45,505.77
  6. Step 6: Final answer
    x = 23,872.46

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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.