Finding the Fourth Proportional to 83,678.11, 115,470.30 and 49,684.84
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Solution
The fourth proportional to 83,678.11, 115,470.30 and 49,684.84 is: 68,561.82
Step by Step Solution
- Step 1: Write the proportion equation
83,678.11 : 115,470.30 = 49,684.84 : x - Step 2: Convert to fraction form
83,678.11/115,470.30 = 49,684.84/x - Step 3: Cross multiply
83,678.11x = 115,470.30 × 49,684.84 - Step 4: Simplify right side
83,678.11x = 5,737,123,380.25 - Step 5: Solve for x
x = 5,737,123,380.25/83,678.11 - Step 6: Final answer
x = 68,561.82
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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.