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Finding the Third Proportional to 30,213 and 39,163.50

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Solution

The third proportional to 30,213 and 39,163.50 is: 50,765.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213 : 39,163.50 = 39,163.50 : x
  2. Step 2: Convert to fraction form
    30,213/39,163.50 = 39,163.50/x
  3. Step 3: Cross multiply
    30,213x = 39,163.50 × 39,163.50
  4. Step 4: Simplify right side
    30,213x = 1,533,779,732.25
  5. Step 5: Solve for x
    x = 1,533,779,732.25/30,213
  6. Step 6: Final answer
    x = 50,765.56

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.