Finding the Fourth Proportional to 86,329.75, 129,513.15 and 48,907.75
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Solution
The fourth proportional to 86,329.75, 129,513.15 and 48,907.75 is: 73,372.12
Step by Step Solution
- Step 1: Write the proportion equation
86,329.75 : 129,513.15 = 48,907.75 : x - Step 2: Convert to fraction form
86,329.75/129,513.15 = 48,907.75/x - Step 3: Cross multiply
86,329.75x = 129,513.15 × 48,907.75 - Step 4: Simplify right side
86,329.75x = 6,334,196,761.91 - Step 5: Solve for x
x = 6,334,196,761.91/86,329.75 - Step 6: Final answer
x = 73,372.12
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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.