Finding the Fourth Proportional to 74,141.38, 102,314.60 and 40,149.09
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Solution
The fourth proportional to 74,141.38, 102,314.60 and 40,149.09 is: 55,405.47
Step by Step Solution
- Step 1: Write the proportion equation
74,141.38 : 102,314.60 = 40,149.09 : x - Step 2: Convert to fraction form
74,141.38/102,314.60 = 40,149.09/x - Step 3: Cross multiply
74,141.38x = 102,314.60 × 40,149.09 - Step 4: Simplify right side
74,141.38x = 4,107,838,140.01 - Step 5: Solve for x
x = 4,107,838,140.01/74,141.38 - Step 6: Final answer
x = 55,405.47
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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.