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Finding the Third Proportional to 30,280,685 and 66,617,170

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Solution

The third proportional to 30,280,685 and 66,617,170 is: 146,557,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,280,685 : 66,617,170 = 66,617,170 : x
  2. Step 2: Convert to fraction form
    30,280,685/66,617,170 = 66,617,170/x
  3. Step 3: Cross multiply
    30,280,685x = 66,617,170 × 66,617,170
  4. Step 4: Simplify right side
    30,280,685x = 4,437,847,338,808,900
  5. Step 5: Solve for x
    x = 4,437,847,338,808,900/30,280,685
  6. Step 6: Final answer
    x = 146,557,032.60

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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.