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Finding the Third Proportional to 53,621 and 79,518

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Solution

The third proportional to 53,621 and 79,518 is: 117,922.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,621 : 79,518 = 79,518 : x
  2. Step 2: Convert to fraction form
    53,621/79,518 = 79,518/x
  3. Step 3: Cross multiply
    53,621x = 79,518 × 79,518
  4. Step 4: Simplify right side
    53,621x = 6,323,112,324
  5. Step 5: Solve for x
    x = 6,323,112,324/53,621
  6. Step 6: Final answer
    x = 117,922.31

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.