Finding the Fourth Proportional to 84.05, 125.95 and 47.99
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Solution
The fourth proportional to 84.05, 125.95 and 47.99 is: 71.91
Step by Step Solution
- Step 1: Write the proportion equation
84.05 : 125.95 = 47.99 : x - Step 2: Convert to fraction form
84.05/125.95 = 47.99/x - Step 3: Cross multiply
84.05x = 125.95 × 47.99 - Step 4: Simplify right side
84.05x = 6,044.34 - Step 5: Solve for x
x = 6,044.34/84.05 - Step 6: Final answer
x = 71.91
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.