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Finding the Third Proportional to 43,430 and 64,965

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Solution

The third proportional to 43,430 and 64,965 is: 97,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,430 : 64,965 = 64,965 : x
  2. Step 2: Convert to fraction form
    43,430/64,965 = 64,965/x
  3. Step 3: Cross multiply
    43,430x = 64,965 × 64,965
  4. Step 4: Simplify right side
    43,430x = 4,220,451,225
  5. Step 5: Solve for x
    x = 4,220,451,225/43,430
  6. Step 6: Final answer
    x = 97,178.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.