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Finding the Fourth Proportional to 47,709.99, 71,564.99 and 18,120.83

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Solution

The fourth proportional to 47,709.99, 71,564.99 and 18,120.83 is: 27,181.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,709.99 : 71,564.99 = 18,120.83 : x
  2. Step 2: Convert to fraction form
    47,709.99/71,564.99 = 18,120.83/x
  3. Step 3: Cross multiply
    47,709.99x = 71,564.99 × 18,120.83
  4. Step 4: Simplify right side
    47,709.99x = 1,296,816,569.31
  5. Step 5: Solve for x
    x = 1,296,816,569.31/47,709.99
  6. Step 6: Final answer
    x = 27,181.24

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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.