Finding the Fourth Proportional to 97,991.52, 135,229.92 and 55,549.20
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Solution
The fourth proportional to 97,991.52, 135,229.92 and 55,549.20 is: 76,658.82
Step by Step Solution
- Step 1: Write the proportion equation
97,991.52 : 135,229.92 = 55,549.20 : x - Step 2: Convert to fraction form
97,991.52/135,229.92 = 55,549.20/x - Step 3: Cross multiply
97,991.52x = 135,229.92 × 55,549.20 - Step 4: Simplify right side
97,991.52x = 7,511,913,872.06 - Step 5: Solve for x
x = 7,511,913,872.06/97,991.52 - Step 6: Final answer
x = 76,658.82
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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.