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Finding the Third Proportional to 30,388 and 63,847

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Solution

The third proportional to 30,388 and 63,847 is: 134,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388 : 63,847 = 63,847 : x
  2. Step 2: Convert to fraction form
    30,388/63,847 = 63,847/x
  3. Step 3: Cross multiply
    30,388x = 63,847 × 63,847
  4. Step 4: Simplify right side
    30,388x = 4,076,439,409
  5. Step 5: Solve for x
    x = 4,076,439,409/30,388
  6. Step 6: Final answer
    x = 134,146.35

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.