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Finding the Third Proportional to 53,072 and 74,388

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Solution

The third proportional to 53,072 and 74,388 is: 104,265.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,072 : 74,388 = 74,388 : x
  2. Step 2: Convert to fraction form
    53,072/74,388 = 74,388/x
  3. Step 3: Cross multiply
    53,072x = 74,388 × 74,388
  4. Step 4: Simplify right side
    53,072x = 5,533,574,544
  5. Step 5: Solve for x
    x = 5,533,574,544/53,072
  6. Step 6: Final answer
    x = 104,265.42

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.