Finding the Fourth Proportional to 74,087.46, 102,243.09 and 40,553.46
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Solution
The fourth proportional to 74,087.46, 102,243.09 and 40,553.46 is: 55,965.09
Step by Step Solution
- Step 1: Write the proportion equation
74,087.46 : 102,243.09 = 40,553.46 : x - Step 2: Convert to fraction form
74,087.46/102,243.09 = 40,553.46/x - Step 3: Cross multiply
74,087.46x = 102,243.09 × 40,553.46 - Step 4: Simplify right side
74,087.46x = 4,146,311,060.59 - Step 5: Solve for x
x = 4,146,311,060.59/74,087.46 - Step 6: Final answer
x = 55,965.09
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1.5x scale
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.