Finding the Fourth Proportional to 90,776.40, 125,268.84 and 50,491.68
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Solution
The fourth proportional to 90,776.40, 125,268.84 and 50,491.68 is: 69,677.08
Step by Step Solution
- Step 1: Write the proportion equation
90,776.40 : 125,268.84 = 50,491.68 : x - Step 2: Convert to fraction form
90,776.40/125,268.84 = 50,491.68/x - Step 3: Cross multiply
90,776.40x = 125,268.84 × 50,491.68 - Step 4: Simplify right side
90,776.40x = 6,325,034,183.25 - Step 5: Solve for x
x = 6,325,034,183.25/90,776.40 - Step 6: Final answer
x = 69,677.08
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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.