Finding the Fourth Proportional to 75,639.80, 113,459.70 and 52,311.80
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Solution
The fourth proportional to 75,639.80, 113,459.70 and 52,311.80 is: 78,467.70
Step by Step Solution
- Step 1: Write the proportion equation
75,639.80 : 113,459.70 = 52,311.80 : x - Step 2: Convert to fraction form
75,639.80/113,459.70 = 52,311.80/x - Step 3: Cross multiply
75,639.80x = 113,459.70 × 52,311.80 - Step 4: Simplify right side
75,639.80x = 5,935,281,134.46 - Step 5: Solve for x
x = 5,935,281,134.46/75,639.80 - Step 6: Final answer
x = 78,467.70
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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.