Finding the Fourth Proportional to 87,805.44, 121,230.86 and 57,642.05
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Solution
The fourth proportional to 87,805.44, 121,230.86 and 57,642.05 is: 79,584.99
Step by Step Solution
- Step 1: Write the proportion equation
87,805.44 : 121,230.86 = 57,642.05 : x - Step 2: Convert to fraction form
87,805.44/121,230.86 = 57,642.05/x - Step 3: Cross multiply
87,805.44x = 121,230.86 × 57,642.05 - Step 4: Simplify right side
87,805.44x = 6,987,995,308.53 - Step 5: Solve for x
x = 6,987,995,308.53/87,805.44 - Step 6: Final answer
x = 79,584.99
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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.