Finding the Fourth Proportional to 74,629.10, 102,986.67 and 40,637.99
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Solution
The fourth proportional to 74,629.10, 102,986.67 and 40,637.99 is: 56,079.62
Step by Step Solution
- Step 1: Write the proportion equation
74,629.10 : 102,986.67 = 40,637.99 : x - Step 2: Convert to fraction form
74,629.10/102,986.67 = 40,637.99/x - Step 3: Cross multiply
74,629.10x = 102,986.67 × 40,637.99 - Step 4: Simplify right side
74,629.10x = 4,185,171,096.15 - Step 5: Solve for x
x = 4,185,171,096.15/74,629.10 - Step 6: Final answer
x = 56,079.62
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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.