Finding the Fourth Proportional to 90,679.86, 125,135.19 and 50,392.08
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Solution
The fourth proportional to 90,679.86, 125,135.19 and 50,392.08 is: 69,539.39
Step by Step Solution
- Step 1: Write the proportion equation
90,679.86 : 125,135.19 = 50,392.08 : x - Step 2: Convert to fraction form
90,679.86/125,135.19 = 50,392.08/x - Step 3: Cross multiply
90,679.86x = 125,135.19 × 50,392.08 - Step 4: Simplify right side
90,679.86x = 6,305,822,505.30 - Step 5: Solve for x
x = 6,305,822,505.30/90,679.86 - Step 6: Final answer
x = 69,539.39
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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.