Finding the Fourth Proportional to 83,653.72, 115,391.36 and 49,639.80
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Solution
The fourth proportional to 83,653.72, 115,391.36 and 49,639.80 is: 68,472.80
Step by Step Solution
- Step 1: Write the proportion equation
83,653.72 : 115,391.36 = 49,639.80 : x - Step 2: Convert to fraction form
83,653.72/115,391.36 = 49,639.80/x - Step 3: Cross multiply
83,653.72x = 115,391.36 × 49,639.80 - Step 4: Simplify right side
83,653.72x = 5,728,004,032.13 - Step 5: Solve for x
x = 5,728,004,032.13/83,653.72 - Step 6: Final answer
x = 68,472.80
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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.