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Finding the Third Proportional to 30,213 and 65,515.50

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Solution

The third proportional to 30,213 and 65,515.50 is: 142,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213 : 65,515.50 = 65,515.50 : x
  2. Step 2: Convert to fraction form
    30,213/65,515.50 = 65,515.50/x
  3. Step 3: Cross multiply
    30,213x = 65,515.50 × 65,515.50
  4. Step 4: Simplify right side
    30,213x = 4,292,280,740.25
  5. Step 5: Solve for x
    x = 4,292,280,740.25/30,213
  6. Step 6: Final answer
    x = 142,067.35

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.