Finding the Fourth Proportional to 72,531.88, 108,695.66 and 57,674.84
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Solution
The fourth proportional to 72,531.88, 108,695.66 and 57,674.84 is: 86,431.03
Step by Step Solution
- Step 1: Write the proportion equation
72,531.88 : 108,695.66 = 57,674.84 : x - Step 2: Convert to fraction form
72,531.88/108,695.66 = 57,674.84/x - Step 3: Cross multiply
72,531.88x = 108,695.66 × 57,674.84 - Step 4: Simplify right side
72,531.88x = 6,269,004,799.19 - Step 5: Solve for x
x = 6,269,004,799.19/72,531.88 - Step 6: Final answer
x = 86,431.03
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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.