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Finding the Third Proportional to 39,646,520 and 55,831,876

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Solution

The third proportional to 39,646,520 and 55,831,876 is: 78,624,766.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,646,520 : 55,831,876 = 55,831,876 : x
  2. Step 2: Convert to fraction form
    39,646,520/55,831,876 = 55,831,876/x
  3. Step 3: Cross multiply
    39,646,520x = 55,831,876 × 55,831,876
  4. Step 4: Simplify right side
    39,646,520x = 3,117,198,377,679,376
  5. Step 5: Solve for x
    x = 3,117,198,377,679,376/39,646,520
  6. Step 6: Final answer
    x = 78,624,766.50

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.