Finding the Fourth Proportional to 102,850.81, 141,947.26 and 57,531.31
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Solution
The fourth proportional to 102,850.81, 141,947.26 and 57,531.31 is: 79,400.55
Step by Step Solution
- Step 1: Write the proportion equation
102,850.81 : 141,947.26 = 57,531.31 : x - Step 2: Convert to fraction form
102,850.81/141,947.26 = 57,531.31/x - Step 3: Cross multiply
102,850.81x = 141,947.26 × 57,531.31 - Step 4: Simplify right side
102,850.81x = 8,166,410,965.15 - Step 5: Solve for x
x = 8,166,410,965.15/102,850.81 - Step 6: Final answer
x = 79,400.55
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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.