Finding the Fourth Proportional to 75,915.62, 113,885.60 and 38,460.54
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Solution
The fourth proportional to 75,915.62, 113,885.60 and 38,460.54 is: 57,696.98
Step by Step Solution
- Step 1: Write the proportion equation
75,915.62 : 113,885.60 = 38,460.54 : x - Step 2: Convert to fraction form
75,915.62/113,885.60 = 38,460.54/x - Step 3: Cross multiply
75,915.62x = 113,885.60 × 38,460.54 - Step 4: Simplify right side
75,915.62x = 4,380,101,674.22 - Step 5: Solve for x
x = 4,380,101,674.22/75,915.62 - Step 6: Final answer
x = 57,696.98
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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.