Finding the Fourth Proportional to 76,247.09, 105,218.70 and 42,713.09
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Solution
The fourth proportional to 76,247.09, 105,218.70 and 42,713.09 is: 58,942.78
Step by Step Solution
- Step 1: Write the proportion equation
76,247.09 : 105,218.70 = 42,713.09 : x - Step 2: Convert to fraction form
76,247.09/105,218.70 = 42,713.09/x - Step 3: Cross multiply
76,247.09x = 105,218.70 × 42,713.09 - Step 4: Simplify right side
76,247.09x = 4,494,215,802.78 - Step 5: Solve for x
x = 4,494,215,802.78/76,247.09 - Step 6: Final answer
x = 58,942.78
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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.