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Finding the Third Proportional to 57,621 and 77,502

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Solution

The third proportional to 57,621 and 77,502 is: 104,242.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,621 : 77,502 = 77,502 : x
  2. Step 2: Convert to fraction form
    57,621/77,502 = 77,502/x
  3. Step 3: Cross multiply
    57,621x = 77,502 × 77,502
  4. Step 4: Simplify right side
    57,621x = 6,006,560,004
  5. Step 5: Solve for x
    x = 6,006,560,004/57,621
  6. Step 6: Final answer
    x = 104,242.55

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.