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Finding the Third Proportional to 30,602 and 66,100

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Solution

The third proportional to 30,602 and 66,100 is: 142,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602 : 66,100 = 66,100 : x
  2. Step 2: Convert to fraction form
    30,602/66,100 = 66,100/x
  3. Step 3: Cross multiply
    30,602x = 66,100 × 66,100
  4. Step 4: Simplify right side
    30,602x = 4,369,210,000
  5. Step 5: Solve for x
    x = 4,369,210,000/30,602
  6. Step 6: Final answer
    x = 142,775.31

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.