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Finding the Fourth Proportional to 52,879.49, 79,318.11 and 12,898.60

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Solution

The fourth proportional to 52,879.49, 79,318.11 and 12,898.60 is: 19,347.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,879.49 : 79,318.11 = 12,898.60 : x
  2. Step 2: Convert to fraction form
    52,879.49/79,318.11 = 12,898.60/x
  3. Step 3: Cross multiply
    52,879.49x = 79,318.11 × 12,898.60
  4. Step 4: Simplify right side
    52,879.49x = 1,023,092,375.35
  5. Step 5: Solve for x
    x = 1,023,092,375.35/52,879.49
  6. Step 6: Final answer
    x = 19,347.62

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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.