Finding the Fourth Proportional to 76,843.80, 115,265.70 and 76,843.80
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Solution
The fourth proportional to 76,843.80, 115,265.70 and 76,843.80 is: 115,265.70
Step by Step Solution
- Step 1: Write the proportion equation
76,843.80 : 115,265.70 = 76,843.80 : x - Step 2: Convert to fraction form
76,843.80/115,265.70 = 76,843.80/x - Step 3: Cross multiply
76,843.80x = 115,265.70 × 76,843.80 - Step 4: Simplify right side
76,843.80x = 8,857,454,397.66 - Step 5: Solve for x
x = 8,857,454,397.66/76,843.80 - Step 6: Final answer
x = 115,265.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.