Finding the Fourth Proportional to 71.97, 107.99 and 68.73
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Solution
The fourth proportional to 71.97, 107.99 and 68.73 is: 103.12
Step by Step Solution
- Step 1: Write the proportion equation
71.97 : 107.99 = 68.73 : x - Step 2: Convert to fraction form
71.97/107.99 = 68.73/x - Step 3: Cross multiply
71.97x = 107.99 × 68.73 - Step 4: Simplify right side
71.97x = 7,421.81 - Step 5: Solve for x
x = 7,421.81/71.97 - Step 6: Final answer
x = 103.12
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.