Finding the Fourth Proportional to 74,279.36, 102,504.96 and 40,745.12
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Solution
The fourth proportional to 74,279.36, 102,504.96 and 40,745.12 is: 56,227.96
Step by Step Solution
- Step 1: Write the proportion equation
74,279.36 : 102,504.96 = 40,745.12 : x - Step 2: Convert to fraction form
74,279.36/102,504.96 = 40,745.12/x - Step 3: Cross multiply
74,279.36x = 102,504.96 × 40,745.12 - Step 4: Simplify right side
74,279.36x = 4,176,576,895.80 - Step 5: Solve for x
x = 4,176,576,895.80/74,279.36 - Step 6: Final answer
x = 56,227.96
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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.