Finding the Fourth Proportional to 79,912.08, 110,744.88 and 78,784.56
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Solution
The fourth proportional to 79,912.08, 110,744.88 and 78,784.56 is: 109,182.32
Step by Step Solution
- Step 1: Write the proportion equation
79,912.08 : 110,744.88 = 78,784.56 : x - Step 2: Convert to fraction form
79,912.08/110,744.88 = 78,784.56/x - Step 3: Cross multiply
79,912.08x = 110,744.88 × 78,784.56 - Step 4: Simplify right side
79,912.08x = 8,724,986,643.05 - Step 5: Solve for x
x = 8,724,986,643.05/79,912.08 - Step 6: Final answer
x = 109,182.32
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.