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Finding the Third Proportional to 53,322.75 and 81,135

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Solution

The third proportional to 53,322.75 and 81,135 is: 123,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,322.75 : 81,135 = 81,135 : x
  2. Step 2: Convert to fraction form
    53,322.75/81,135 = 81,135/x
  3. Step 3: Cross multiply
    53,322.75x = 81,135 × 81,135
  4. Step 4: Simplify right side
    53,322.75x = 6,582,888,225
  5. Step 5: Solve for x
    x = 6,582,888,225/53,322.75
  6. Step 6: Final answer
    x = 123,453.65

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.