Finding the Fourth Proportional to 74,780.91, 103,197.97 and 40,790.12
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Solution
The fourth proportional to 74,780.91, 103,197.97 and 40,790.12 is: 56,290.54
Step by Step Solution
- Step 1: Write the proportion equation
74,780.91 : 103,197.97 = 40,790.12 : x - Step 2: Convert to fraction form
74,780.91/103,197.97 = 40,790.12/x - Step 3: Cross multiply
74,780.91x = 103,197.97 × 40,790.12 - Step 4: Simplify right side
74,780.91x = 4,209,458,006.05 - Step 5: Solve for x
x = 4,209,458,006.05/74,780.91 - Step 6: Final answer
x = 56,290.54
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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.