Finding the Fourth Proportional to 75,688.75, 104,450.48 and 42,154.75
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Solution
The fourth proportional to 75,688.75, 104,450.48 and 42,154.75 is: 58,173.56
Step by Step Solution
- Step 1: Write the proportion equation
75,688.75 : 104,450.48 = 42,154.75 : x - Step 2: Convert to fraction form
75,688.75/104,450.48 = 42,154.75/x - Step 3: Cross multiply
75,688.75x = 104,450.48 × 42,154.75 - Step 4: Simplify right side
75,688.75x = 4,403,083,871.78 - Step 5: Solve for x
x = 4,403,083,871.78/75,688.75 - Step 6: Final answer
x = 58,173.56
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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.