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Finding the Third Proportional to 72,828.75 and 109,911.75

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Solution

The third proportional to 72,828.75 and 109,911.75 is: 165,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,828.75 : 109,911.75 = 109,911.75 : x
  2. Step 2: Convert to fraction form
    72,828.75/109,911.75 = 109,911.75/x
  3. Step 3: Cross multiply
    72,828.75x = 109,911.75 × 109,911.75
  4. Step 4: Simplify right side
    72,828.75x = 12,080,592,788.06
  5. Step 5: Solve for x
    x = 12,080,592,788.06/72,828.75
  6. Step 6: Final answer
    x = 165,876.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.