Finding the Fourth Proportional to 81,369.75, 122,054.65 and 39,241.99
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Solution
The fourth proportional to 81,369.75, 122,054.65 and 39,241.99 is: 58,862.99
Step by Step Solution
- Step 1: Write the proportion equation
81,369.75 : 122,054.65 = 39,241.99 : x - Step 2: Convert to fraction form
81,369.75/122,054.65 = 39,241.99/x - Step 3: Cross multiply
81,369.75x = 122,054.65 × 39,241.99 - Step 4: Simplify right side
81,369.75x = 4,789,666,951.51 - Step 5: Solve for x
x = 4,789,666,951.51/81,369.75 - Step 6: Final answer
x = 58,862.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.