Finding the Fourth Proportional to 75,134.78, 112,523.26 and 43,478.12
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Solution
The fourth proportional to 75,134.78, 112,523.26 and 43,478.12 is: 65,113.65
Step by Step Solution
- Step 1: Write the proportion equation
75,134.78 : 112,523.26 = 43,478.12 : x - Step 2: Convert to fraction form
75,134.78/112,523.26 = 43,478.12/x - Step 3: Cross multiply
75,134.78x = 112,523.26 × 43,478.12 - Step 4: Simplify right side
75,134.78x = 4,892,299,801.07 - Step 5: Solve for x
x = 4,892,299,801.07/75,134.78 - Step 6: Final answer
x = 65,113.65
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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.