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Finding the Third Proportional to 62,428 and 91,305

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Solution

The third proportional to 62,428 and 91,305 is: 133,539.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,428 : 91,305 = 91,305 : x
  2. Step 2: Convert to fraction form
    62,428/91,305 = 91,305/x
  3. Step 3: Cross multiply
    62,428x = 91,305 × 91,305
  4. Step 4: Simplify right side
    62,428x = 8,336,603,025
  5. Step 5: Solve for x
    x = 8,336,603,025/62,428
  6. Step 6: Final answer
    x = 133,539.49

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.