Finding the Fourth Proportional to 74,845.70, 112,268.11 and 18,685.70
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Solution
The fourth proportional to 74,845.70, 112,268.11 and 18,685.70 is: 28,028.44
Step by Step Solution
- Step 1: Write the proportion equation
74,845.70 : 112,268.11 = 18,685.70 : x - Step 2: Convert to fraction form
74,845.70/112,268.11 = 18,685.70/x - Step 3: Cross multiply
74,845.70x = 112,268.11 × 18,685.70 - Step 4: Simplify right side
74,845.70x = 2,097,808,223.03 - Step 5: Solve for x
x = 2,097,808,223.03/74,845.70 - Step 6: Final answer
x = 28,028.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.