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Finding the Fourth Proportional to 81,058.68, 111,859.10 and 45,252

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Solution

The fourth proportional to 81,058.68, 111,859.10 and 45,252 is: 62,446.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,058.68 : 111,859.10 = 45,252 : x
  2. Step 2: Convert to fraction form
    81,058.68/111,859.10 = 45,252/x
  3. Step 3: Cross multiply
    81,058.68x = 111,859.10 × 45,252
  4. Step 4: Simplify right side
    81,058.68x = 5,061,847,993.20
  5. Step 5: Solve for x
    x = 5,061,847,993.20/81,058.68
  6. Step 6: Final answer
    x = 62,446.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.