Finding the Fourth Proportional to 99,825.60, 149,738.40 and 40,703.70
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Solution
The fourth proportional to 99,825.60, 149,738.40 and 40,703.70 is: 61,055.55
Step by Step Solution
- Step 1: Write the proportion equation
99,825.60 : 149,738.40 = 40,703.70 : x - Step 2: Convert to fraction form
99,825.60/149,738.40 = 40,703.70/x - Step 3: Cross multiply
99,825.60x = 149,738.40 × 40,703.70 - Step 4: Simplify right side
99,825.60x = 6,094,906,912.08 - Step 5: Solve for x
x = 6,094,906,912.08/99,825.60 - Step 6: Final answer
x = 61,055.55
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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.