Finding the Fourth Proportional to 98,694.72, 136,197.02 and 55,674.31
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Solution
The fourth proportional to 98,694.72, 136,197.02 and 55,674.31 is: 76,829.59
Step by Step Solution
- Step 1: Write the proportion equation
98,694.72 : 136,197.02 = 55,674.31 : x - Step 2: Convert to fraction form
98,694.72/136,197.02 = 55,674.31/x - Step 3: Cross multiply
98,694.72x = 136,197.02 × 55,674.31 - Step 4: Simplify right side
98,694.72x = 7,582,674,911.25 - Step 5: Solve for x
x = 7,582,674,911.25/98,694.72 - Step 6: Final answer
x = 76,829.59
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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.