Finding the Fourth Proportional to 71,408.79, 106,474.76 and 69,447.03
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Solution
The fourth proportional to 71,408.79, 106,474.76 and 69,447.03 is: 103,549.65
Step by Step Solution
- Step 1: Write the proportion equation
71,408.79 : 106,474.76 = 69,447.03 : x - Step 2: Convert to fraction form
71,408.79/106,474.76 = 69,447.03/x - Step 3: Cross multiply
71,408.79x = 106,474.76 × 69,447.03 - Step 4: Simplify right side
71,408.79x = 7,394,355,504.73 - Step 5: Solve for x
x = 7,394,355,504.73/71,408.79 - Step 6: Final answer
x = 103,549.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.