Finding the Fourth Proportional to 75,624.40, 113,436.60 and 57,909.70
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Solution
The fourth proportional to 75,624.40, 113,436.60 and 57,909.70 is: 86,864.55
Step by Step Solution
- Step 1: Write the proportion equation
75,624.40 : 113,436.60 = 57,909.70 : x - Step 2: Convert to fraction form
75,624.40/113,436.60 = 57,909.70/x - Step 3: Cross multiply
75,624.40x = 113,436.60 × 57,909.70 - Step 4: Simplify right side
75,624.40x = 6,569,079,475.02 - Step 5: Solve for x
x = 6,569,079,475.02/75,624.40 - Step 6: Final answer
x = 86,864.55
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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.