Finding the Fourth Proportional to 74,193.30, 102,386.43 and 40,201.92
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Solution
The fourth proportional to 74,193.30, 102,386.43 and 40,201.92 is: 55,478.47
Step by Step Solution
- Step 1: Write the proportion equation
74,193.30 : 102,386.43 = 40,201.92 : x - Step 2: Convert to fraction form
74,193.30/102,386.43 = 40,201.92/x - Step 3: Cross multiply
74,193.30x = 102,386.43 × 40,201.92 - Step 4: Simplify right side
74,193.30x = 4,116,131,067.95 - Step 5: Solve for x
x = 4,116,131,067.95/74,193.30 - Step 6: Final answer
x = 55,478.47
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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.