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Finding the Third Proportional to 30,664,500 and 67,551,000

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Solution

The third proportional to 30,664,500 and 67,551,000 is: 148,808,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,664,500 : 67,551,000 = 67,551,000 : x
  2. Step 2: Convert to fraction form
    30,664,500/67,551,000 = 67,551,000/x
  3. Step 3: Cross multiply
    30,664,500x = 67,551,000 × 67,551,000
  4. Step 4: Simplify right side
    30,664,500x = 4,563,137,601,000,000
  5. Step 5: Solve for x
    x = 4,563,137,601,000,000/30,664,500
  6. Step 6: Final answer
    x = 148,808,478.89

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.