Finding the Fourth Proportional to 83,943.75, 125,915.63 and 28,539.75
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Solution
The fourth proportional to 83,943.75, 125,915.63 and 28,539.75 is: 42,809.63
Step by Step Solution
- Step 1: Write the proportion equation
83,943.75 : 125,915.63 = 28,539.75 : x - Step 2: Convert to fraction form
83,943.75/125,915.63 = 28,539.75/x - Step 3: Cross multiply
83,943.75x = 125,915.63 × 28,539.75 - Step 4: Simplify right side
83,943.75x = 3,593,600,458.59 - Step 5: Solve for x
x = 3,593,600,458.59/83,943.75 - Step 6: Final answer
x = 42,809.63
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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.