Finding the Fourth Proportional to 75,579.20, 113,368.80 and 63,915.20
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Solution
The fourth proportional to 75,579.20, 113,368.80 and 63,915.20 is: 95,872.80
Step by Step Solution
- Step 1: Write the proportion equation
75,579.20 : 113,368.80 = 63,915.20 : x - Step 2: Convert to fraction form
75,579.20/113,368.80 = 63,915.20/x - Step 3: Cross multiply
75,579.20x = 113,368.80 × 63,915.20 - Step 4: Simplify right side
75,579.20x = 7,245,989,525.76 - Step 5: Solve for x
x = 7,245,989,525.76/75,579.20 - Step 6: Final answer
x = 95,872.80
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1.5x scale
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.