Finding the Fourth Proportional to 71,257.80, 106,886.70 and 43,609.80
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Solution
The fourth proportional to 71,257.80, 106,886.70 and 43,609.80 is: 65,414.70
Step by Step Solution
- Step 1: Write the proportion equation
71,257.80 : 106,886.70 = 43,609.80 : x - Step 2: Convert to fraction form
71,257.80/106,886.70 = 43,609.80/x - Step 3: Cross multiply
71,257.80x = 106,886.70 × 43,609.80 - Step 4: Simplify right side
71,257.80x = 4,661,307,609.66 - Step 5: Solve for x
x = 4,661,307,609.66/71,257.80 - Step 6: Final answer
x = 65,414.70
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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.