Finding the Fourth Proportional to 74,452.40, 102,743.12 and 40,917.68
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Solution
The fourth proportional to 74,452.40, 102,743.12 and 40,917.68 is: 56,465.74
Step by Step Solution
- Step 1: Write the proportion equation
74,452.40 : 102,743.12 = 40,917.68 : x - Step 2: Convert to fraction form
74,452.40/102,743.12 = 40,917.68/x - Step 3: Cross multiply
74,452.40x = 102,743.12 × 40,917.68 - Step 4: Simplify right side
74,452.40x = 4,204,010,106.36 - Step 5: Solve for x
x = 4,204,010,106.36/74,452.40 - Step 6: Final answer
x = 56,465.74
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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.