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Finding the Third Proportional to 18,719.63 and 40,719.56

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Solution

The third proportional to 18,719.63 and 40,719.56 is: 88,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.63 : 40,719.56 = 40,719.56 : x
  2. Step 2: Convert to fraction form
    18,719.63/40,719.56 = 40,719.56/x
  3. Step 3: Cross multiply
    18,719.63x = 40,719.56 × 40,719.56
  4. Step 4: Simplify right side
    18,719.63x = 1,658,082,770.19
  5. Step 5: Solve for x
    x = 1,658,082,770.19/18,719.63
  6. Step 6: Final answer
    x = 88,574.57

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.