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Finding the Fourth Proportional to 79,327.31, 109,490.07 and 50,983.79

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Solution

The fourth proportional to 79,327.31, 109,490.07 and 50,983.79 is: 70,369.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,327.31 : 109,490.07 = 50,983.79 : x
  2. Step 2: Convert to fraction form
    79,327.31/109,490.07 = 50,983.79/x
  3. Step 3: Cross multiply
    79,327.31x = 109,490.07 × 50,983.79
  4. Step 4: Simplify right side
    79,327.31x = 5,582,218,188.51
  5. Step 5: Solve for x
    x = 5,582,218,188.51/79,327.31
  6. Step 6: Final answer
    x = 70,369.44

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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.