Finding the Fourth Proportional to 71,976.32, 107,750.40 and 43,811.84
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Solution
The fourth proportional to 71,976.32, 107,750.40 and 43,811.84 is: 65,587.45
Step by Step Solution
- Step 1: Write the proportion equation
71,976.32 : 107,750.40 = 43,811.84 : x - Step 2: Convert to fraction form
71,976.32/107,750.40 = 43,811.84/x - Step 3: Cross multiply
71,976.32x = 107,750.40 × 43,811.84 - Step 4: Simplify right side
71,976.32x = 4,720,743,284.74 - Step 5: Solve for x
x = 4,720,743,284.74/71,976.32 - Step 6: Final answer
x = 65,587.45
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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.