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Finding the Third Proportional to 30,386 and 65,314

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Solution

The third proportional to 30,386 and 65,314 is: 140,390.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386 : 65,314 = 65,314 : x
  2. Step 2: Convert to fraction form
    30,386/65,314 = 65,314/x
  3. Step 3: Cross multiply
    30,386x = 65,314 × 65,314
  4. Step 4: Simplify right side
    30,386x = 4,265,918,596
  5. Step 5: Solve for x
    x = 4,265,918,596/30,386
  6. Step 6: Final answer
    x = 140,390.92

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.