Finding the Fourth Proportional to 83,408.20, 125,112.30 and 55,511.80
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Solution
The fourth proportional to 83,408.20, 125,112.30 and 55,511.80 is: 83,267.70
Step by Step Solution
- Step 1: Write the proportion equation
83,408.20 : 125,112.30 = 55,511.80 : x - Step 2: Convert to fraction form
83,408.20/125,112.30 = 55,511.80/x - Step 3: Cross multiply
83,408.20x = 125,112.30 × 55,511.80 - Step 4: Simplify right side
83,408.20x = 6,945,208,975.14 - Step 5: Solve for x
x = 6,945,208,975.14/83,408.20 - Step 6: Final answer
x = 83,267.70
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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.