Finding the Fourth Proportional to 81,492.13, 122,236.44 and 49,478.77
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Solution
The fourth proportional to 81,492.13, 122,236.44 and 49,478.77 is: 74,217.09
Step by Step Solution
- Step 1: Write the proportion equation
81,492.13 : 122,236.44 = 49,478.77 : x - Step 2: Convert to fraction form
81,492.13/122,236.44 = 49,478.77/x - Step 3: Cross multiply
81,492.13x = 122,236.44 × 49,478.77 - Step 4: Simplify right side
81,492.13x = 6,048,108,700.38 - Step 5: Solve for x
x = 6,048,108,700.38/81,492.13 - Step 6: Final answer
x = 74,217.09
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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.