Finding the Fourth Proportional to 74,371.13, 102,631.58 and 40,378.94
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Solution
The fourth proportional to 74,371.13, 102,631.58 and 40,378.94 is: 55,722.62
Step by Step Solution
- Step 1: Write the proportion equation
74,371.13 : 102,631.58 = 40,378.94 : x - Step 2: Convert to fraction form
74,371.13/102,631.58 = 40,378.94/x - Step 3: Cross multiply
74,371.13x = 102,631.58 × 40,378.94 - Step 4: Simplify right side
74,371.13x = 4,144,153,695.87 - Step 5: Solve for x
x = 4,144,153,695.87/74,371.13 - Step 6: Final answer
x = 55,722.62
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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.