Finding the Fourth Proportional to 102,391.75, 141,296.07 and 57,074.68
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Solution
The fourth proportional to 102,391.75, 141,296.07 and 57,074.68 is: 78,760.52
Step by Step Solution
- Step 1: Write the proportion equation
102,391.75 : 141,296.07 = 57,074.68 : x - Step 2: Convert to fraction form
102,391.75/141,296.07 = 57,074.68/x - Step 3: Cross multiply
102,391.75x = 141,296.07 × 57,074.68 - Step 4: Simplify right side
102,391.75x = 8,064,427,980.51 - Step 5: Solve for x
x = 8,064,427,980.51/102,391.75 - Step 6: Final answer
x = 78,760.52
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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.