Finding the Fourth Proportional to 83,906.11, 125,905.29 and 39,531.70
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Solution
The fourth proportional to 83,906.11, 125,905.29 and 39,531.70 is: 59,319.28
Step by Step Solution
- Step 1: Write the proportion equation
83,906.11 : 125,905.29 = 39,531.70 : x - Step 2: Convert to fraction form
83,906.11/125,905.29 = 39,531.70/x - Step 3: Cross multiply
83,906.11x = 125,905.29 × 39,531.70 - Step 4: Simplify right side
83,906.11x = 4,977,250,152.69 - Step 5: Solve for x
x = 4,977,250,152.69/83,906.11 - Step 6: Final answer
x = 59,319.28
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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.