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Finding the Third Proportional to 28,989 and 63,207

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Solution

The third proportional to 28,989 and 63,207 is: 137,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989 : 63,207 = 63,207 : x
  2. Step 2: Convert to fraction form
    28,989/63,207 = 63,207/x
  3. Step 3: Cross multiply
    28,989x = 63,207 × 63,207
  4. Step 4: Simplify right side
    28,989x = 3,995,124,849
  5. Step 5: Solve for x
    x = 3,995,124,849/28,989
  6. Step 6: Final answer
    x = 137,815.20

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.