Finding the Fourth Proportional to 75,738.84, 112,869.97 and 73,458.60
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Solution
The fourth proportional to 75,738.84, 112,869.97 and 73,458.60 is: 109,471.84
Step by Step Solution
- Step 1: Write the proportion equation
75,738.84 : 112,869.97 = 73,458.60 : x - Step 2: Convert to fraction form
75,738.84/112,869.97 = 73,458.60/x - Step 3: Cross multiply
75,738.84x = 112,869.97 × 73,458.60 - Step 4: Simplify right side
75,738.84x = 8,291,269,978.24 - Step 5: Solve for x
x = 8,291,269,978.24/75,738.84 - Step 6: Final answer
x = 109,471.84
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.