Finding the Fourth Proportional to 83,425.80, 125,138.70 and 76,945.80
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Solution
The fourth proportional to 83,425.80, 125,138.70 and 76,945.80 is: 115,418.70
Step by Step Solution
- Step 1: Write the proportion equation
83,425.80 : 125,138.70 = 76,945.80 : x - Step 2: Convert to fraction form
83,425.80/125,138.70 = 76,945.80/x - Step 3: Cross multiply
83,425.80x = 125,138.70 × 76,945.80 - Step 4: Simplify right side
83,425.80x = 9,628,897,382.46 - Step 5: Solve for x
x = 9,628,897,382.46/83,425.80 - Step 6: Final answer
x = 115,418.70
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1.5x scale
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.