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Finding the Third Proportional to 19,128 and 45,228

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Solution

The third proportional to 19,128 and 45,228 is: 106,941.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128 : 45,228 = 45,228 : x
  2. Step 2: Convert to fraction form
    19,128/45,228 = 45,228/x
  3. Step 3: Cross multiply
    19,128x = 45,228 × 45,228
  4. Step 4: Simplify right side
    19,128x = 2,045,571,984
  5. Step 5: Solve for x
    x = 2,045,571,984/19,128
  6. Step 6: Final answer
    x = 106,941.24

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.