Finding the Fourth Proportional to 74,351.36, 102,603.60 and 40,817.12
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Solution
The fourth proportional to 74,351.36, 102,603.60 and 40,817.12 is: 56,326.92
Step by Step Solution
- Step 1: Write the proportion equation
74,351.36 : 102,603.60 = 40,817.12 : x - Step 2: Convert to fraction form
74,351.36/102,603.60 = 40,817.12/x - Step 3: Cross multiply
74,351.36x = 102,603.60 × 40,817.12 - Step 4: Simplify right side
74,351.36x = 4,187,983,453.63 - Step 5: Solve for x
x = 4,187,983,453.63/74,351.36 - Step 6: Final answer
x = 56,326.92
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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.