Finding the Fourth Proportional to 91,115.80, 136,673.70 and 44,459.80
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Solution
The fourth proportional to 91,115.80, 136,673.70 and 44,459.80 is: 66,689.70
Step by Step Solution
- Step 1: Write the proportion equation
91,115.80 : 136,673.70 = 44,459.80 : x - Step 2: Convert to fraction form
91,115.80/136,673.70 = 44,459.80/x - Step 3: Cross multiply
91,115.80x = 136,673.70 × 44,459.80 - Step 4: Simplify right side
91,115.80x = 6,076,485,367.26 - Step 5: Solve for x
x = 6,076,485,367.26/91,115.80 - Step 6: Final answer
x = 66,689.70
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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.