Finding the Fourth Proportional to 90,678.36, 125,133.65 and 50,391.09
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Solution
The fourth proportional to 90,678.36, 125,133.65 and 50,391.09 is: 69,538.32
Step by Step Solution
- Step 1: Write the proportion equation
90,678.36 : 125,133.65 = 50,391.09 : x - Step 2: Convert to fraction form
90,678.36/125,133.65 = 50,391.09/x - Step 3: Cross multiply
90,678.36x = 125,133.65 × 50,391.09 - Step 4: Simplify right side
90,678.36x = 6,305,620,767.22 - Step 5: Solve for x
x = 6,305,620,767.22/90,678.36 - Step 6: Final answer
x = 69,538.32
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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.