Finding the Fourth Proportional to 79,745.10, 119,617.80 and 74,873.55
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Solution
The fourth proportional to 79,745.10, 119,617.80 and 74,873.55 is: 112,310.47
Step by Step Solution
- Step 1: Write the proportion equation
79,745.10 : 119,617.80 = 74,873.55 : x - Step 2: Convert to fraction form
79,745.10/119,617.80 = 74,873.55/x - Step 3: Cross multiply
79,745.10x = 119,617.80 × 74,873.55 - Step 4: Simplify right side
79,745.10x = 8,956,209,329.19 - Step 5: Solve for x
x = 8,956,209,329.19/79,745.10 - Step 6: Final answer
x = 112,310.47
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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.