Finding the Fourth Proportional to 99,660.24, 137,558.16 and 57,247.20
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Solution
The fourth proportional to 99,660.24, 137,558.16 and 57,247.20 is: 79,016.66
Step by Step Solution
- Step 1: Write the proportion equation
99,660.24 : 137,558.16 = 57,247.20 : x - Step 2: Convert to fraction form
99,660.24/137,558.16 = 57,247.20/x - Step 3: Cross multiply
99,660.24x = 137,558.16 × 57,247.20 - Step 4: Simplify right side
99,660.24x = 7,874,819,497.15 - Step 5: Solve for x
x = 7,874,819,497.15/99,660.24 - Step 6: Final answer
x = 79,016.66
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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.