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Finding the Fourth Proportional to 81,161.92, 111,996.16 and 45,346.96

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Solution

The fourth proportional to 81,161.92, 111,996.16 and 45,346.96 is: 62,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.92 : 111,996.16 = 45,346.96 : x
  2. Step 2: Convert to fraction form
    81,161.92/111,996.16 = 45,346.96/x
  3. Step 3: Cross multiply
    81,161.92x = 111,996.16 × 45,346.96
  4. Step 4: Simplify right side
    81,161.92x = 5,078,685,387.67
  5. Step 5: Solve for x
    x = 5,078,685,387.67/81,161.92
  6. Step 6: Final answer
    x = 62,574.73

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1.5x scale

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.