Finding the Fourth Proportional to 84,643.21, 126,968.88 and 69,824.68
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Solution
The fourth proportional to 84,643.21, 126,968.88 and 69,824.68 is: 104,740.37
Step by Step Solution
- Step 1: Write the proportion equation
84,643.21 : 126,968.88 = 69,824.68 : x - Step 2: Convert to fraction form
84,643.21/126,968.88 = 69,824.68/x - Step 3: Cross multiply
84,643.21x = 126,968.88 × 69,824.68 - Step 4: Simplify right side
84,643.21x = 8,865,561,415.96 - Step 5: Solve for x
x = 8,865,561,415.96/84,643.21 - Step 6: Final answer
x = 104,740.37
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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.