Finding the Fourth Proportional to 75,512.80, 113,282.80 and 31,115.28
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Solution
The fourth proportional to 75,512.80, 113,282.80 and 31,115.28 is: 46,678.52
Step by Step Solution
- Step 1: Write the proportion equation
75,512.80 : 113,282.80 = 31,115.28 : x - Step 2: Convert to fraction form
75,512.80/113,282.80 = 31,115.28/x - Step 3: Cross multiply
75,512.80x = 113,282.80 × 31,115.28 - Step 4: Simplify right side
75,512.80x = 3,524,826,041.18 - Step 5: Solve for x
x = 3,524,826,041.18/75,512.80 - Step 6: Final answer
x = 46,678.52
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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.