Finding the Fourth Proportional to 84,715.30, 126,927.15 and 55,117.90
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Solution
The fourth proportional to 84,715.30, 126,927.15 and 55,117.90 is: 82,581.99
Step by Step Solution
- Step 1: Write the proportion equation
84,715.30 : 126,927.15 = 55,117.90 : x - Step 2: Convert to fraction form
84,715.30/126,927.15 = 55,117.90/x - Step 3: Cross multiply
84,715.30x = 126,927.15 × 55,117.90 - Step 4: Simplify right side
84,715.30x = 6,995,957,960.99 - Step 5: Solve for x
x = 6,995,957,960.99/84,715.30 - Step 6: Final answer
x = 82,581.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.