Finding the Fourth Proportional to 74,411.09, 102,687.26 and 40,419.65
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Solution
The fourth proportional to 74,411.09, 102,687.26 and 40,419.65 is: 55,779.09
Step by Step Solution
- Step 1: Write the proportion equation
74,411.09 : 102,687.26 = 40,419.65 : x - Step 2: Convert to fraction form
74,411.09/102,687.26 = 40,419.65/x - Step 3: Cross multiply
74,411.09x = 102,687.26 × 40,419.65 - Step 4: Simplify right side
74,411.09x = 4,150,583,108.66 - Step 5: Solve for x
x = 4,150,583,108.66/74,411.09 - Step 6: Final answer
x = 55,779.09
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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.