Finding the Fourth Proportional to 91,976.40, 126,927.93 and 53,738.19
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Solution
The fourth proportional to 91,976.40, 126,927.93 and 53,738.19 is: 74,158.99
Step by Step Solution
- Step 1: Write the proportion equation
91,976.40 : 126,927.93 = 53,738.19 : x - Step 2: Convert to fraction form
91,976.40/126,927.93 = 53,738.19/x - Step 3: Cross multiply
91,976.40x = 126,927.93 × 53,738.19 - Step 4: Simplify right side
91,976.40x = 6,820,877,218.65 - Step 5: Solve for x
x = 6,820,877,218.65/91,976.40 - Step 6: Final answer
x = 74,158.99
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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.