Finding the Fourth Proportional to 75,717.36, 113,566.98 and 31,338.80
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Solution
The fourth proportional to 75,717.36, 113,566.98 and 31,338.80 is: 47,004.45
Step by Step Solution
- Step 1: Write the proportion equation
75,717.36 : 113,566.98 = 31,338.80 : x - Step 2: Convert to fraction form
75,717.36/113,566.98 = 31,338.80/x - Step 3: Cross multiply
75,717.36x = 113,566.98 × 31,338.80 - Step 4: Simplify right side
75,717.36x = 3,559,052,872.82 - Step 5: Solve for x
x = 3,559,052,872.82/75,717.36 - Step 6: Final answer
x = 47,004.45
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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.