Finding the Fourth Proportional to 74,379.20, 102,713.36 and 51,779.99
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Solution
The fourth proportional to 74,379.20, 102,713.36 and 51,779.99 is: 71,505.17
Step by Step Solution
- Step 1: Write the proportion equation
74,379.20 : 102,713.36 = 51,779.99 : x - Step 2: Convert to fraction form
74,379.20/102,713.36 = 51,779.99/x - Step 3: Cross multiply
74,379.20x = 102,713.36 × 51,779.99 - Step 4: Simplify right side
74,379.20x = 5,318,496,945.72 - Step 5: Solve for x
x = 5,318,496,945.72/74,379.20 - Step 6: Final answer
x = 71,505.17
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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.