Finding the Fourth Proportional to 98,391.81, 135,782.27 and 53,679.81
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Solution
The fourth proportional to 98,391.81, 135,782.27 and 53,679.81 is: 74,078.99
Step by Step Solution
- Step 1: Write the proportion equation
98,391.81 : 135,782.27 = 53,679.81 : x - Step 2: Convert to fraction form
98,391.81/135,782.27 = 53,679.81/x - Step 3: Cross multiply
98,391.81x = 135,782.27 × 53,679.81 - Step 4: Simplify right side
98,391.81x = 7,288,766,186.57 - Step 5: Solve for x
x = 7,288,766,186.57/98,391.81 - Step 6: Final answer
x = 74,078.99
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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.