Finding the Fourth Proportional to 54.17, 80.87 and 48.09
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Solution
The fourth proportional to 54.17, 80.87 and 48.09 is: 71.80
Step by Step Solution
- Step 1: Write the proportion equation
54.17 : 80.87 = 48.09 : x - Step 2: Convert to fraction form
54.17/80.87 = 48.09/x - Step 3: Cross multiply
54.17x = 80.87 × 48.09 - Step 4: Simplify right side
54.17x = 3,889.10 - Step 5: Solve for x
x = 3,889.10/54.17 - Step 6: Final answer
x = 71.80
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.