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Finding the Fourth Proportional to 45,397.56, 68,058.06 and 21,691.71

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Solution

The fourth proportional to 45,397.56, 68,058.06 and 21,691.71 is: 32,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,397.56 : 68,058.06 = 21,691.71 : x
  2. Step 2: Convert to fraction form
    45,397.56/68,058.06 = 21,691.71/x
  3. Step 3: Cross multiply
    45,397.56x = 68,058.06 × 21,691.71
  4. Step 4: Simplify right side
    45,397.56x = 1,476,295,700.68
  5. Step 5: Solve for x
    x = 1,476,295,700.68/45,397.56
  6. Step 6: Final answer
    x = 32,519.27

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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.