Finding the Fourth Proportional to 83,442.88, 115,047.84 and 55,103.68
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Solution
The fourth proportional to 83,442.88, 115,047.84 and 55,103.68 is: 75,974.84
Step by Step Solution
- Step 1: Write the proportion equation
83,442.88 : 115,047.84 = 55,103.68 : x - Step 2: Convert to fraction form
83,442.88/115,047.84 = 55,103.68/x - Step 3: Cross multiply
83,442.88x = 115,047.84 × 55,103.68 - Step 4: Simplify right side
83,442.88x = 6,339,559,360.05 - Step 5: Solve for x
x = 6,339,559,360.05/83,442.88 - Step 6: Final answer
x = 75,974.84
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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.