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Finding the Third Proportional to 66,809,794.50 and 139,728,240

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Solution

The third proportional to 66,809,794.50 and 139,728,240 is: 292,232,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809,794.50 : 139,728,240 = 139,728,240 : x
  2. Step 2: Convert to fraction form
    66,809,794.50/139,728,240 = 139,728,240/x
  3. Step 3: Cross multiply
    66,809,794.50x = 139,728,240 × 139,728,240
  4. Step 4: Simplify right side
    66,809,794.50x = 19,523,981,053,497,600
  5. Step 5: Solve for x
    x = 19,523,981,053,497,600/66,809,794.50
  6. Step 6: Final answer
    x = 292,232,317.13

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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.