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Finding the Fourth Proportional to 73,162.74, 100,964.69 and 39,628.66

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Solution

The fourth proportional to 73,162.74, 100,964.69 and 39,628.66 is: 54,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,162.74 : 100,964.69 = 39,628.66 : x
  2. Step 2: Convert to fraction form
    73,162.74/100,964.69 = 39,628.66/x
  3. Step 3: Cross multiply
    73,162.74x = 100,964.69 × 39,628.66
  4. Step 4: Simplify right side
    73,162.74x = 4,001,095,372.02
  5. Step 5: Solve for x
    x = 4,001,095,372.02/73,162.74
  6. Step 6: Final answer
    x = 54,687.61

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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.