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Finding the Third Proportional to 72,576 and 106,728

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Solution

The third proportional to 72,576 and 106,728 is: 156,950.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,576 : 106,728 = 106,728 : x
  2. Step 2: Convert to fraction form
    72,576/106,728 = 106,728/x
  3. Step 3: Cross multiply
    72,576x = 106,728 × 106,728
  4. Step 4: Simplify right side
    72,576x = 11,390,865,984
  5. Step 5: Solve for x
    x = 11,390,865,984/72,576
  6. Step 6: Final answer
    x = 156,950.87

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.