Finding the Fourth Proportional to 90,822.99, 136,235.25 and 31,658.55
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Solution
The fourth proportional to 90,822.99, 136,235.25 and 31,658.55 is: 47,488.09
Step by Step Solution
- Step 1: Write the proportion equation
90,822.99 : 136,235.25 = 31,658.55 : x - Step 2: Convert to fraction form
90,822.99/136,235.25 = 31,658.55/x - Step 3: Cross multiply
90,822.99x = 136,235.25 × 31,658.55 - Step 4: Simplify right side
90,822.99x = 4,313,010,473.89 - Step 5: Solve for x
x = 4,313,010,473.89/90,822.99 - Step 6: Final answer
x = 47,488.09
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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.