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Finding the Fourth Proportional to 79,898, 119,239.46 and 71,040.96

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Solution

The fourth proportional to 79,898, 119,239.46 and 71,040.96 is: 106,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,898 : 119,239.46 = 71,040.96 : x
  2. Step 2: Convert to fraction form
    79,898/119,239.46 = 71,040.96/x
  3. Step 3: Cross multiply
    79,898x = 119,239.46 × 71,040.96
  4. Step 4: Simplify right side
    79,898x = 8,470,885,708.28
  5. Step 5: Solve for x
    x = 8,470,885,708.28/79,898
  6. Step 6: Final answer
    x = 106,021.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.