Finding the Fourth Proportional to 74,371.10, 102,631.54 and 40,378.92
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Solution
The fourth proportional to 74,371.10, 102,631.54 and 40,378.92 is: 55,722.60
Step by Step Solution
- Step 1: Write the proportion equation
74,371.10 : 102,631.54 = 40,378.92 : x - Step 2: Convert to fraction form
74,371.10/102,631.54 = 40,378.92/x - Step 3: Cross multiply
74,371.10x = 102,631.54 × 40,378.92 - Step 4: Simplify right side
74,371.10x = 4,144,150,743.14 - Step 5: Solve for x
x = 4,144,150,743.14/74,371.10 - Step 6: Final answer
x = 55,722.60
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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.