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Finding the Third Proportional to 30,918,376 and 67,164,280

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Solution

The third proportional to 30,918,376 and 67,164,280 is: 145,901,599.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918,376 : 67,164,280 = 67,164,280 : x
  2. Step 2: Convert to fraction form
    30,918,376/67,164,280 = 67,164,280/x
  3. Step 3: Cross multiply
    30,918,376x = 67,164,280 × 67,164,280
  4. Step 4: Simplify right side
    30,918,376x = 4,511,040,507,918,400
  5. Step 5: Solve for x
    x = 4,511,040,507,918,400/30,918,376
  6. Step 6: Final answer
    x = 145,901,599.36

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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.