Finding the Fourth Proportional to 100,407.44, 138,563.88 and 57,969.68
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Solution
The fourth proportional to 100,407.44, 138,563.88 and 57,969.68 is: 79,999.09
Step by Step Solution
- Step 1: Write the proportion equation
100,407.44 : 138,563.88 = 57,969.68 : x - Step 2: Convert to fraction form
100,407.44/138,563.88 = 57,969.68/x - Step 3: Cross multiply
100,407.44x = 138,563.88 × 57,969.68 - Step 4: Simplify right side
100,407.44x = 8,032,503,783.16 - Step 5: Solve for x
x = 8,032,503,783.16/100,407.44 - Step 6: Final answer
x = 79,999.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.