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Finding the Fourth Proportional to 72,392.99, 108,469.46 and 51,228.16

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Solution

The fourth proportional to 72,392.99, 108,469.46 and 51,228.16 is: 76,757.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,392.99 : 108,469.46 = 51,228.16 : x
  2. Step 2: Convert to fraction form
    72,392.99/108,469.46 = 51,228.16/x
  3. Step 3: Cross multiply
    72,392.99x = 108,469.46 × 51,228.16
  4. Step 4: Simplify right side
    72,392.99x = 5,556,690,851.99
  5. Step 5: Solve for x
    x = 5,556,690,851.99/72,392.99
  6. Step 6: Final answer
    x = 76,757.31

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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.