Finding the Fourth Proportional to 90,143.68, 124,393.39 and 49,855.09
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Solution
The fourth proportional to 90,143.68, 124,393.39 and 49,855.09 is: 68,797.32
Step by Step Solution
- Step 1: Write the proportion equation
90,143.68 : 124,393.39 = 49,855.09 : x - Step 2: Convert to fraction form
90,143.68/124,393.39 = 49,855.09/x - Step 3: Cross multiply
90,143.68x = 124,393.39 × 49,855.09 - Step 4: Simplify right side
90,143.68x = 6,201,643,653.86 - Step 5: Solve for x
x = 6,201,643,653.86/90,143.68 - Step 6: Final answer
x = 68,797.32
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1.5x scale
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.