Finding the Fourth Proportional to 75,936.39, 113,913.70 and 31,593.14
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Solution
The fourth proportional to 75,936.39, 113,913.70 and 31,593.14 is: 47,393.50
Step by Step Solution
- Step 1: Write the proportion equation
75,936.39 : 113,913.70 = 31,593.14 : x - Step 2: Convert to fraction form
75,936.39/113,913.70 = 31,593.14/x - Step 3: Cross multiply
75,936.39x = 113,913.70 × 31,593.14 - Step 4: Simplify right side
75,936.39x = 3,598,891,472.02 - Step 5: Solve for x
x = 3,598,891,472.02/75,936.39 - Step 6: Final answer
x = 47,393.50
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1.5x scale
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.