Finding the Fourth Proportional to 90,633.18, 125,023.41 and 84,218.55
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Solution
The fourth proportional to 90,633.18, 125,023.41 and 84,218.55 is: 116,174.79
Step by Step Solution
- Step 1: Write the proportion equation
90,633.18 : 125,023.41 = 84,218.55 : x - Step 2: Convert to fraction form
90,633.18/125,023.41 = 84,218.55/x - Step 3: Cross multiply
90,633.18x = 125,023.41 × 84,218.55 - Step 4: Simplify right side
90,633.18x = 10,529,290,306.26 - Step 5: Solve for x
x = 10,529,290,306.26/90,633.18 - Step 6: Final answer
x = 116,174.79
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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.