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Finding the Fourth Proportional to 73,170.06, 100,974.87 and 39,636.06

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Solution

The fourth proportional to 73,170.06, 100,974.87 and 39,636.06 is: 54,697.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,170.06 : 100,974.87 = 39,636.06 : x
  2. Step 2: Convert to fraction form
    73,170.06/100,974.87 = 39,636.06/x
  3. Step 3: Cross multiply
    73,170.06x = 100,974.87 × 39,636.06
  4. Step 4: Simplify right side
    73,170.06x = 4,002,246,005.81
  5. Step 5: Solve for x
    x = 4,002,246,005.81/73,170.06
  6. Step 6: Final answer
    x = 54,697.86

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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.