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Finding the Third Proportional to 21,428 and 46,664

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Solution

The third proportional to 21,428 and 46,664 is: 101,620.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428 : 46,664 = 46,664 : x
  2. Step 2: Convert to fraction form
    21,428/46,664 = 46,664/x
  3. Step 3: Cross multiply
    21,428x = 46,664 × 46,664
  4. Step 4: Simplify right side
    21,428x = 2,177,528,896
  5. Step 5: Solve for x
    x = 2,177,528,896/21,428
  6. Step 6: Final answer
    x = 101,620.73

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.