Finding the Fourth Proportional to 74,471.70, 102,672.21 and 61,677.75
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Solution
The fourth proportional to 74,471.70, 102,672.21 and 61,677.75 is: 85,033.52
Step by Step Solution
- Step 1: Write the proportion equation
74,471.70 : 102,672.21 = 61,677.75 : x - Step 2: Convert to fraction form
74,471.70/102,672.21 = 61,677.75/x - Step 3: Cross multiply
74,471.70x = 102,672.21 × 61,677.75 - Step 4: Simplify right side
74,471.70x = 6,332,591,169.70 - Step 5: Solve for x
x = 6,332,591,169.70/74,471.70 - Step 6: Final answer
x = 85,033.52
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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.