Finding the Fourth Proportional to 81,189.03, 121,752.39 and 27,871.08
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Solution
The fourth proportional to 81,189.03, 121,752.39 and 27,871.08 is: 41,795.92
Step by Step Solution
- Step 1: Write the proportion equation
81,189.03 : 121,752.39 = 27,871.08 : x - Step 2: Convert to fraction form
81,189.03/121,752.39 = 27,871.08/x - Step 3: Cross multiply
81,189.03x = 121,752.39 × 27,871.08 - Step 4: Simplify right side
81,189.03x = 3,393,370,601.88 - Step 5: Solve for x
x = 3,393,370,601.88/81,189.03 - Step 6: Final answer
x = 41,795.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.