Finding the Fourth Proportional to 92,909.45, 128,218.14 and 54,662.19
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Solution
The fourth proportional to 92,909.45, 128,218.14 and 54,662.19 is: 75,435.65
Step by Step Solution
- Step 1: Write the proportion equation
92,909.45 : 128,218.14 = 54,662.19 : x - Step 2: Convert to fraction form
92,909.45/128,218.14 = 54,662.19/x - Step 3: Cross multiply
92,909.45x = 128,218.14 × 54,662.19 - Step 4: Simplify right side
92,909.45x = 7,008,684,330.13 - Step 5: Solve for x
x = 7,008,684,330.13/92,909.45 - Step 6: Final answer
x = 75,435.65
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Double scale
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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.