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Finding the Third Proportional to 55,556 and 79,388

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Solution

The third proportional to 55,556 and 79,388 is: 113,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,556 : 79,388 = 79,388 : x
  2. Step 2: Convert to fraction form
    55,556/79,388 = 79,388/x
  3. Step 3: Cross multiply
    55,556x = 79,388 × 79,388
  4. Step 4: Simplify right side
    55,556x = 6,302,454,544
  5. Step 5: Solve for x
    x = 6,302,454,544/55,556
  6. Step 6: Final answer
    x = 113,443.27

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.