Finding the Fourth Proportional to 87,986.14, 121,427.31 and 50,259.58
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Solution
The fourth proportional to 87,986.14, 121,427.31 and 50,259.58 is: 69,361.90
Step by Step Solution
- Step 1: Write the proportion equation
87,986.14 : 121,427.31 = 50,259.58 : x - Step 2: Convert to fraction form
87,986.14/121,427.31 = 50,259.58/x - Step 3: Cross multiply
87,986.14x = 121,427.31 × 50,259.58 - Step 4: Simplify right side
87,986.14x = 6,102,885,601.13 - Step 5: Solve for x
x = 6,102,885,601.13/87,986.14 - Step 6: Final answer
x = 69,361.90
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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.