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Finding the Third Proportional to 19,419.75 and 31,087.13

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Solution

The third proportional to 19,419.75 and 31,087.13 is: 49,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.75 : 31,087.13 = 31,087.13 : x
  2. Step 2: Convert to fraction form
    19,419.75/31,087.13 = 31,087.13/x
  3. Step 3: Cross multiply
    19,419.75x = 31,087.13 × 31,087.13
  4. Step 4: Simplify right side
    19,419.75x = 966,409,340.77
  5. Step 5: Solve for x
    x = 966,409,340.77/19,419.75
  6. Step 6: Final answer
    x = 49,764.25

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.