Finding the Fourth Proportional to 77,650.80, 107,029.05 and 54,960.68
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Solution
The fourth proportional to 77,650.80, 107,029.05 and 54,960.68 is: 75,754.39
Step by Step Solution
- Step 1: Write the proportion equation
77,650.80 : 107,029.05 = 54,960.68 : x - Step 2: Convert to fraction form
77,650.80/107,029.05 = 54,960.68/x - Step 3: Cross multiply
77,650.80x = 107,029.05 × 54,960.68 - Step 4: Simplify right side
77,650.80x = 5,882,388,827.19 - Step 5: Solve for x
x = 5,882,388,827.19/77,650.80 - Step 6: Final answer
x = 75,754.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.