Finding the Fourth Proportional to 79,330.94, 118,814.15 and 66,690.08
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Solution
The fourth proportional to 79,330.94, 118,814.15 and 66,690.08 is: 99,881.90
Step by Step Solution
- Step 1: Write the proportion equation
79,330.94 : 118,814.15 = 66,690.08 : x - Step 2: Convert to fraction form
79,330.94/118,814.15 = 66,690.08/x - Step 3: Cross multiply
79,330.94x = 118,814.15 × 66,690.08 - Step 4: Simplify right side
79,330.94x = 7,923,724,741.29 - Step 5: Solve for x
x = 7,923,724,741.29/79,330.94 - Step 6: Final answer
x = 99,881.90
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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.