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Finding the Third Proportional to 21,128 and 46,224

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Solution

The third proportional to 21,128 and 46,224 is: 101,129.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,128 : 46,224 = 46,224 : x
  2. Step 2: Convert to fraction form
    21,128/46,224 = 46,224/x
  3. Step 3: Cross multiply
    21,128x = 46,224 × 46,224
  4. Step 4: Simplify right side
    21,128x = 2,136,658,176
  5. Step 5: Solve for x
    x = 2,136,658,176/21,128
  6. Step 6: Final answer
    x = 101,129.22

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.