Finding the Fourth Proportional to 76,613.80, 114,920.70 and 53,285.80
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Solution
The fourth proportional to 76,613.80, 114,920.70 and 53,285.80 is: 79,928.70
Step by Step Solution
- Step 1: Write the proportion equation
76,613.80 : 114,920.70 = 53,285.80 : x - Step 2: Convert to fraction form
76,613.80/114,920.70 = 53,285.80/x - Step 3: Cross multiply
76,613.80x = 114,920.70 × 53,285.80 - Step 4: Simplify right side
76,613.80x = 6,123,641,436.06 - Step 5: Solve for x
x = 6,123,641,436.06/76,613.80 - Step 6: Final answer
x = 79,928.70
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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.