Finding the Fourth Proportional to 83,821.77, 115,653.74 and 53,183.68
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Solution
The fourth proportional to 83,821.77, 115,653.74 and 53,183.68 is: 73,380.59
Step by Step Solution
- Step 1: Write the proportion equation
83,821.77 : 115,653.74 = 53,183.68 : x - Step 2: Convert to fraction form
83,821.77/115,653.74 = 53,183.68/x - Step 3: Cross multiply
83,821.77x = 115,653.74 × 53,183.68 - Step 4: Simplify right side
83,821.77x = 6,150,890,943.91 - Step 5: Solve for x
x = 6,150,890,943.91/83,821.77 - Step 6: Final answer
x = 73,380.59
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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.