Finding the Fourth Proportional to 75,143.21, 112,640.69 and 41,878.94
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Solution
The fourth proportional to 75,143.21, 112,640.69 and 41,878.94 is: 62,777.09
Step by Step Solution
- Step 1: Write the proportion equation
75,143.21 : 112,640.69 = 41,878.94 : x - Step 2: Convert to fraction form
75,143.21/112,640.69 = 41,878.94/x - Step 3: Cross multiply
75,143.21x = 112,640.69 × 41,878.94 - Step 4: Simplify right side
75,143.21x = 4,717,271,925.47 - Step 5: Solve for x
x = 4,717,271,925.47/75,143.21 - Step 6: Final answer
x = 62,777.09
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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.