Finding the Fourth Proportional to 84,082.14, 115,912.80 and 66,146.01
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Solution
The fourth proportional to 84,082.14, 115,912.80 and 66,146.01 is: 91,186.66
Step by Step Solution
- Step 1: Write the proportion equation
84,082.14 : 115,912.80 = 66,146.01 : x - Step 2: Convert to fraction form
84,082.14/115,912.80 = 66,146.01/x - Step 3: Cross multiply
84,082.14x = 115,912.80 × 66,146.01 - Step 4: Simplify right side
84,082.14x = 7,667,169,227.93 - Step 5: Solve for x
x = 7,667,169,227.93/84,082.14 - Step 6: Final answer
x = 91,186.66
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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.