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Finding the Fourth Proportional to 81,451.71, 112,408.02 and 45,653.29

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Solution

The fourth proportional to 81,451.71, 112,408.02 and 45,653.29 is: 63,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,451.71 : 112,408.02 = 45,653.29 : x
  2. Step 2: Convert to fraction form
    81,451.71/112,408.02 = 45,653.29/x
  3. Step 3: Cross multiply
    81,451.71x = 112,408.02 × 45,653.29
  4. Step 4: Simplify right side
    81,451.71x = 5,131,795,654.37
  5. Step 5: Solve for x
    x = 5,131,795,654.37/81,451.71
  6. Step 6: Final answer
    x = 63,004.15

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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.