Finding the Fourth Proportional to 77,216.68, 115,660.99 and 43,919.61
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Solution
The fourth proportional to 77,216.68, 115,660.99 and 43,919.61 is: 65,786.12
Step by Step Solution
- Step 1: Write the proportion equation
77,216.68 : 115,660.99 = 43,919.61 : x - Step 2: Convert to fraction form
77,216.68/115,660.99 = 43,919.61/x - Step 3: Cross multiply
77,216.68x = 115,660.99 × 43,919.61 - Step 4: Simplify right side
77,216.68x = 5,079,785,573.01 - Step 5: Solve for x
x = 5,079,785,573.01/77,216.68 - Step 6: Final answer
x = 65,786.12
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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.