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Finding the Fourth Proportional to 79,431.59, 119,174.74 and 49,814.75

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Solution

The fourth proportional to 79,431.59, 119,174.74 and 49,814.75 is: 74,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,431.59 : 119,174.74 = 49,814.75 : x
  2. Step 2: Convert to fraction form
    79,431.59/119,174.74 = 49,814.75/x
  3. Step 3: Cross multiply
    79,431.59x = 119,174.74 × 49,814.75
  4. Step 4: Simplify right side
    79,431.59x = 5,936,660,052.81
  5. Step 5: Solve for x
    x = 5,936,660,052.81/79,431.59
  6. Step 6: Final answer
    x = 74,739.28

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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.