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Finding the Third Proportional to 77,421 and 169,604.25

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Solution

The third proportional to 77,421 and 169,604.25 is: 371,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,421 : 169,604.25 = 169,604.25 : x
  2. Step 2: Convert to fraction form
    77,421/169,604.25 = 169,604.25/x
  3. Step 3: Cross multiply
    77,421x = 169,604.25 × 169,604.25
  4. Step 4: Simplify right side
    77,421x = 28,765,601,618.06
  5. Step 5: Solve for x
    x = 28,765,601,618.06/77,421
  6. Step 6: Final answer
    x = 371,547.79

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.