Finding the Fourth Proportional to 87.58, 120.93 and 58.53
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Solution
The fourth proportional to 87.58, 120.93 and 58.53 is: 80.82
Step by Step Solution
- Step 1: Write the proportion equation
87.58 : 120.93 = 58.53 : x - Step 2: Convert to fraction form
87.58/120.93 = 58.53/x - Step 3: Cross multiply
87.58x = 120.93 × 58.53 - Step 4: Simplify right side
87.58x = 7,078.03 - Step 5: Solve for x
x = 7,078.03/87.58 - Step 6: Final answer
x = 80.82
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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.