Finding the Fourth Proportional to 86,569.21, 129,912.14 and 33,972.49
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Solution
The fourth proportional to 86,569.21, 129,912.14 and 33,972.49 is: 50,981.62
Step by Step Solution
- Step 1: Write the proportion equation
86,569.21 : 129,912.14 = 33,972.49 : x - Step 2: Convert to fraction form
86,569.21/129,912.14 = 33,972.49/x - Step 3: Cross multiply
86,569.21x = 129,912.14 × 33,972.49 - Step 4: Simplify right side
86,569.21x = 4,413,438,877.03 - Step 5: Solve for x
x = 4,413,438,877.03/86,569.21 - Step 6: Final answer
x = 50,981.62
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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.