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Finding the Third Proportional to 35,781 and 77,716.50

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Solution

The third proportional to 35,781 and 77,716.50 is: 168,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781 : 77,716.50 = 77,716.50 : x
  2. Step 2: Convert to fraction form
    35,781/77,716.50 = 77,716.50/x
  3. Step 3: Cross multiply
    35,781x = 77,716.50 × 77,716.50
  4. Step 4: Simplify right side
    35,781x = 6,039,854,372.25
  5. Step 5: Solve for x
    x = 6,039,854,372.25/35,781
  6. Step 6: Final answer
    x = 168,800.60

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.