Finding the Fourth Proportional to 91,213.55, 125,865.12 and 52,965.62
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Solution
The fourth proportional to 91,213.55, 125,865.12 and 52,965.62 is: 73,086.99
Step by Step Solution
- Step 1: Write the proportion equation
91,213.55 : 125,865.12 = 52,965.62 : x - Step 2: Convert to fraction form
91,213.55/125,865.12 = 52,965.62/x - Step 3: Cross multiply
91,213.55x = 125,865.12 × 52,965.62 - Step 4: Simplify right side
91,213.55x = 6,666,524,117.17 - Step 5: Solve for x
x = 6,666,524,117.17/91,213.55 - Step 6: Final answer
x = 73,086.99
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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.