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Finding the Fourth Proportional to 81,504.54, 112,487.76 and 45,214.11

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Solution

The fourth proportional to 81,504.54, 112,487.76 and 45,214.11 is: 62,401.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,504.54 : 112,487.76 = 45,214.11 : x
  2. Step 2: Convert to fraction form
    81,504.54/112,487.76 = 45,214.11/x
  3. Step 3: Cross multiply
    81,504.54x = 112,487.76 × 45,214.11
  4. Step 4: Simplify right side
    81,504.54x = 5,086,033,954.29
  5. Step 5: Solve for x
    x = 5,086,033,954.29/81,504.54
  6. Step 6: Final answer
    x = 62,401.85

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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.