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Finding the Fourth Proportional to 79,416.70, 119,174.40 and 49,489.68

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Solution

The fourth proportional to 79,416.70, 119,174.40 and 49,489.68 is: 74,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,416.70 : 119,174.40 = 49,489.68 : x
  2. Step 2: Convert to fraction form
    79,416.70/119,174.40 = 49,489.68/x
  3. Step 3: Cross multiply
    79,416.70x = 119,174.40 × 49,489.68
  4. Step 4: Simplify right side
    79,416.70x = 5,897,902,920.19
  5. Step 5: Solve for x
    x = 5,897,902,920.19/79,416.70
  6. Step 6: Final answer
    x = 74,265.27

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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.