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Finding the Fourth Proportional to 70,997.67, 106,478.27 and 21,065.96

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Solution

The fourth proportional to 70,997.67, 106,478.27 and 21,065.96 is: 31,593.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,997.67 : 106,478.27 = 21,065.96 : x
  2. Step 2: Convert to fraction form
    70,997.67/106,478.27 = 21,065.96/x
  3. Step 3: Cross multiply
    70,997.67x = 106,478.27 × 21,065.96
  4. Step 4: Simplify right side
    70,997.67x = 2,243,066,338.97
  5. Step 5: Solve for x
    x = 2,243,066,338.97/70,997.67
  6. Step 6: Final answer
    x = 31,593.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.