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Finding the Third Proportional to 19,985 and 30,029

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Solution

The third proportional to 19,985 and 30,029 is: 45,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985 : 30,029 = 30,029 : x
  2. Step 2: Convert to fraction form
    19,985/30,029 = 30,029/x
  3. Step 3: Cross multiply
    19,985x = 30,029 × 30,029
  4. Step 4: Simplify right side
    19,985x = 901,740,841
  5. Step 5: Solve for x
    x = 901,740,841/19,985
  6. Step 6: Final answer
    x = 45,120.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.