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Finding the Third Proportional to 72,820 and 97,873

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Solution

The third proportional to 72,820 and 97,873 is: 131,545.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,820 : 97,873 = 97,873 : x
  2. Step 2: Convert to fraction form
    72,820/97,873 = 97,873/x
  3. Step 3: Cross multiply
    72,820x = 97,873 × 97,873
  4. Step 4: Simplify right side
    72,820x = 9,579,124,129
  5. Step 5: Solve for x
    x = 9,579,124,129/72,820
  6. Step 6: Final answer
    x = 131,545.24

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.