Finding the Fourth Proportional to 75,271.75, 112,915.19 and 19,867.75
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Solution
The fourth proportional to 75,271.75, 112,915.19 and 19,867.75 is: 29,803.62
Step by Step Solution
- Step 1: Write the proportion equation
75,271.75 : 112,915.19 = 19,867.75 : x - Step 2: Convert to fraction form
75,271.75/112,915.19 = 19,867.75/x - Step 3: Cross multiply
75,271.75x = 112,915.19 × 19,867.75 - Step 4: Simplify right side
75,271.75x = 2,243,370,766.12 - Step 5: Solve for x
x = 2,243,370,766.12/75,271.75 - Step 6: Final answer
x = 29,803.62
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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.