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Finding the Third Proportional to 55,321,685 and 81,188,907

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Solution

The third proportional to 55,321,685 and 81,188,907 is: 119,151,081.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,321,685 : 81,188,907 = 81,188,907 : x
  2. Step 2: Convert to fraction form
    55,321,685/81,188,907 = 81,188,907/x
  3. Step 3: Cross multiply
    55,321,685x = 81,188,907 × 81,188,907
  4. Step 4: Simplify right side
    55,321,685x = 6,591,638,619,854,649
  5. Step 5: Solve for x
    x = 6,591,638,619,854,649/55,321,685
  6. Step 6: Final answer
    x = 119,151,081.89

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.