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Finding the Third Proportional to 9,121,876 and 19,831,472

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Solution

The third proportional to 9,121,876 and 19,831,472 is: 43,114,736.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,876 : 19,831,472 = 19,831,472 : x
  2. Step 2: Convert to fraction form
    9,121,876/19,831,472 = 19,831,472/x
  3. Step 3: Cross multiply
    9,121,876x = 19,831,472 × 19,831,472
  4. Step 4: Simplify right side
    9,121,876x = 393,287,281,686,784
  5. Step 5: Solve for x
    x = 393,287,281,686,784/9,121,876
  6. Step 6: Final answer
    x = 43,114,736.67

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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.