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Finding the Third Proportional to 53,642 and 78,796

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Solution

The third proportional to 53,642 and 78,796 is: 115,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,642 : 78,796 = 78,796 : x
  2. Step 2: Convert to fraction form
    53,642/78,796 = 78,796/x
  3. Step 3: Cross multiply
    53,642x = 78,796 × 78,796
  4. Step 4: Simplify right side
    53,642x = 6,208,809,616
  5. Step 5: Solve for x
    x = 6,208,809,616/53,642
  6. Step 6: Final answer
    x = 115,745.30

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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.