Finding the Fourth Proportional to 78,059.91, 117,090.18 and 18,895.49
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Solution
The fourth proportional to 78,059.91, 117,090.18 and 18,895.49 is: 28,343.31
Step by Step Solution
- Step 1: Write the proportion equation
78,059.91 : 117,090.18 = 18,895.49 : x - Step 2: Convert to fraction form
78,059.91/117,090.18 = 18,895.49/x - Step 3: Cross multiply
78,059.91x = 117,090.18 × 18,895.49 - Step 4: Simplify right side
78,059.91x = 2,212,476,178.93 - Step 5: Solve for x
x = 2,212,476,178.93/78,059.91 - Step 6: Final answer
x = 28,343.31
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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.