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Finding the Fourth Proportional to 79,418.70, 119,177.40 and 49,491.68

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Solution

The fourth proportional to 79,418.70, 119,177.40 and 49,491.68 is: 74,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,418.70 : 119,177.40 = 49,491.68 : x
  2. Step 2: Convert to fraction form
    79,418.70/119,177.40 = 49,491.68/x
  3. Step 3: Cross multiply
    79,418.70x = 119,177.40 × 49,491.68
  4. Step 4: Simplify right side
    79,418.70x = 5,898,289,148.15
  5. Step 5: Solve for x
    x = 5,898,289,148.15/79,418.70
  6. Step 6: Final answer
    x = 74,268.27

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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.