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Finding the Fourth Proportional to 45,757.21, 68,619.73 and 13,726.73

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Solution

The fourth proportional to 45,757.21, 68,619.73 and 13,726.73 is: 20,585.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,757.21 : 68,619.73 = 13,726.73 : x
  2. Step 2: Convert to fraction form
    45,757.21/68,619.73 = 13,726.73/x
  3. Step 3: Cross multiply
    45,757.21x = 68,619.73 × 13,726.73
  4. Step 4: Simplify right side
    45,757.21x = 941,924,418.47
  5. Step 5: Solve for x
    x = 941,924,418.47/45,757.21
  6. Step 6: Final answer
    x = 20,585.27

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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.