Finding the Fourth Proportional to 74,073.49, 102,220.70 and 40,081.23
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Solution
The fourth proportional to 74,073.49, 102,220.70 and 40,081.23 is: 55,311.71
Step by Step Solution
- Step 1: Write the proportion equation
74,073.49 : 102,220.70 = 40,081.23 : x - Step 2: Convert to fraction form
74,073.49/102,220.70 = 40,081.23/x - Step 3: Cross multiply
74,073.49x = 102,220.70 × 40,081.23 - Step 4: Simplify right side
74,073.49x = 4,097,131,187.05 - Step 5: Solve for x
x = 4,097,131,187.05/74,073.49 - Step 6: Final answer
x = 55,311.71
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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.