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Finding the Third Proportional to 3,939,102,090 and 8,531,878,068

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Solution

The third proportional to 3,939,102,090 and 8,531,878,068 is: 18,479,577,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,102,090 : 8,531,878,068 = 8,531,878,068 : x
  2. Step 2: Convert to fraction form
    3,939,102,090/8,531,878,068 = 8,531,878,068/x
  3. Step 3: Cross multiply
    3,939,102,090x = 8,531,878,068 × 8,531,878,068
  4. Step 4: Simplify right side
    3,939,102,090x = 72,792,943,367,219,412,992
  5. Step 5: Solve for x
    x = 72,792,943,367,219,412,992/3,939,102,090
  6. Step 6: Final answer
    x = 18,479,577,757.58

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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.