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Finding the Fourth Proportional to 81,601.45, 112,581.13 and 53,323.54

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Solution

The fourth proportional to 81,601.45, 112,581.13 and 53,323.54 is: 73,567.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,601.45 : 112,581.13 = 53,323.54 : x
  2. Step 2: Convert to fraction form
    81,601.45/112,581.13 = 53,323.54/x
  3. Step 3: Cross multiply
    81,601.45x = 112,581.13 × 53,323.54
  4. Step 4: Simplify right side
    81,601.45x = 6,003,223,974.04
  5. Step 5: Solve for x
    x = 6,003,223,974.04/81,601.45
  6. Step 6: Final answer
    x = 73,567.62

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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.