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Finding the Third Proportional to 30,458 and 45,561

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Solution

The third proportional to 30,458 and 45,561 is: 68,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458 : 45,561 = 45,561 : x
  2. Step 2: Convert to fraction form
    30,458/45,561 = 45,561/x
  3. Step 3: Cross multiply
    30,458x = 45,561 × 45,561
  4. Step 4: Simplify right side
    30,458x = 2,075,804,721
  5. Step 5: Solve for x
    x = 2,075,804,721/30,458
  6. Step 6: Final answer
    x = 68,153.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.