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Finding the Third Proportional to 55,426 and 85,286

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Solution

The third proportional to 55,426 and 85,286 is: 131,232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,426 : 85,286 = 85,286 : x
  2. Step 2: Convert to fraction form
    55,426/85,286 = 85,286/x
  3. Step 3: Cross multiply
    55,426x = 85,286 × 85,286
  4. Step 4: Simplify right side
    55,426x = 7,273,701,796
  5. Step 5: Solve for x
    x = 7,273,701,796/55,426
  6. Step 6: Final answer
    x = 131,232.67

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.