Finding the Fourth Proportional to 76,418.70, 107,141.70 and 76,418.70
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Solution
The fourth proportional to 76,418.70, 107,141.70 and 76,418.70 is: 107,141.70
Step by Step Solution
- Step 1: Write the proportion equation
76,418.70 : 107,141.70 = 76,418.70 : x - Step 2: Convert to fraction form
76,418.70/107,141.70 = 76,418.70/x - Step 3: Cross multiply
76,418.70x = 107,141.70 × 76,418.70 - Step 4: Simplify right side
76,418.70x = 8,187,629,429.79 - Step 5: Solve for x
x = 8,187,629,429.79/76,418.70 - Step 6: Final answer
x = 107,141.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.