Finding the Fourth Proportional to 76,520.70, 107,239.70 and 76,520.70
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Solution
The fourth proportional to 76,520.70, 107,239.70 and 76,520.70 is: 107,239.70
Step by Step Solution
- Step 1: Write the proportion equation
76,520.70 : 107,239.70 = 76,520.70 : x - Step 2: Convert to fraction form
76,520.70/107,239.70 = 76,520.70/x - Step 3: Cross multiply
76,520.70x = 107,239.70 × 76,520.70 - Step 4: Simplify right side
76,520.70x = 8,206,056,672.66 - Step 5: Solve for x
x = 8,206,056,672.66/76,520.70 - Step 6: Final answer
x = 107,239.70
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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.