Finding the Fourth Proportional to 76,479.79, 105,630.42 and 50,944.09
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Solution
The fourth proportional to 76,479.79, 105,630.42 and 50,944.09 is: 70,361.67
Step by Step Solution
- Step 1: Write the proportion equation
76,479.79 : 105,630.42 = 50,944.09 : x - Step 2: Convert to fraction form
76,479.79/105,630.42 = 50,944.09/x - Step 3: Cross multiply
76,479.79x = 105,630.42 × 50,944.09 - Step 4: Simplify right side
76,479.79x = 5,381,245,623.22 - Step 5: Solve for x
x = 5,381,245,623.22/76,479.79 - Step 6: Final answer
x = 70,361.67
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.