Finding the Fourth Proportional to 76,800.80, 115,217.40 and 32,404.70
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Solution
The fourth proportional to 76,800.80, 115,217.40 and 32,404.70 is: 48,613.89
Step by Step Solution
- Step 1: Write the proportion equation
76,800.80 : 115,217.40 = 32,404.70 : x - Step 2: Convert to fraction form
76,800.80/115,217.40 = 32,404.70/x - Step 3: Cross multiply
76,800.80x = 115,217.40 × 32,404.70 - Step 4: Simplify right side
76,800.80x = 3,733,585,281.78 - Step 5: Solve for x
x = 3,733,585,281.78/76,800.80 - Step 6: Final answer
x = 48,613.89
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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.