Finding the Fourth Proportional to 98,004.63, 135,287.79 and 66,216.60
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Solution
The fourth proportional to 98,004.63, 135,287.79 and 66,216.60 is: 91,406.88
Step by Step Solution
- Step 1: Write the proportion equation
98,004.63 : 135,287.79 = 66,216.60 : x - Step 2: Convert to fraction form
98,004.63/135,287.79 = 66,216.60/x - Step 3: Cross multiply
98,004.63x = 135,287.79 × 66,216.60 - Step 4: Simplify right side
98,004.63x = 8,958,297,475.31 - Step 5: Solve for x
x = 8,958,297,475.31/98,004.63 - Step 6: Final answer
x = 91,406.88
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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.