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Finding the Third Proportional to 30,290 and 64,252

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Solution

The third proportional to 30,290 and 64,252 is: 136,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290 : 64,252 = 64,252 : x
  2. Step 2: Convert to fraction form
    30,290/64,252 = 64,252/x
  3. Step 3: Cross multiply
    30,290x = 64,252 × 64,252
  4. Step 4: Simplify right side
    30,290x = 4,128,319,504
  5. Step 5: Solve for x
    x = 4,128,319,504/30,290
  6. Step 6: Final answer
    x = 136,293.15

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.