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Finding the Third Proportional to 66,809,877 and 139,728,348

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Solution

The third proportional to 66,809,877 and 139,728,348 is: 292,232,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809,877 : 139,728,348 = 139,728,348 : x
  2. Step 2: Convert to fraction form
    66,809,877/139,728,348 = 139,728,348/x
  3. Step 3: Cross multiply
    66,809,877x = 139,728,348 × 139,728,348
  4. Step 4: Simplify right side
    66,809,877x = 19,524,011,234,809,104
  5. Step 5: Solve for x
    x = 19,524,011,234,809,104/66,809,877
  6. Step 6: Final answer
    x = 292,232,408.01

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.