Finding the Fourth Proportional to 86,355.89, 129,551.30 and 36,436.09
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Solution
The fourth proportional to 86,355.89, 129,551.30 and 36,436.09 is: 54,661.50
Step by Step Solution
- Step 1: Write the proportion equation
86,355.89 : 129,551.30 = 36,436.09 : x - Step 2: Convert to fraction form
86,355.89/129,551.30 = 36,436.09/x - Step 3: Cross multiply
86,355.89x = 129,551.30 × 36,436.09 - Step 4: Simplify right side
86,355.89x = 4,720,342,826.42 - Step 5: Solve for x
x = 4,720,342,826.42/86,355.89 - Step 6: Final answer
x = 54,661.50
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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.