Finding the Fourth Proportional to 54,493.63, 81,738.18 and 18,963.09
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Solution
The fourth proportional to 54,493.63, 81,738.18 and 18,963.09 is: 28,443.85
Step by Step Solution
- Step 1: Write the proportion equation
54,493.63 : 81,738.18 = 18,963.09 : x - Step 2: Convert to fraction form
54,493.63/81,738.18 = 18,963.09/x - Step 3: Cross multiply
54,493.63x = 81,738.18 × 18,963.09 - Step 4: Simplify right side
54,493.63x = 1,550,008,463.78 - Step 5: Solve for x
x = 1,550,008,463.78/54,493.63 - Step 6: Final answer
x = 28,443.85
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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.