Finding the Fourth Proportional to 67,420.95, 100,973.87 and 53,286.12
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Solution
The fourth proportional to 67,420.95, 100,973.87 and 53,286.12 is: 79,804.65
Step by Step Solution
- Step 1: Write the proportion equation
67,420.95 : 100,973.87 = 53,286.12 : x - Step 2: Convert to fraction form
67,420.95/100,973.87 = 53,286.12/x - Step 3: Cross multiply
67,420.95x = 100,973.87 × 53,286.12 - Step 4: Simplify right side
67,420.95x = 5,380,505,487.25 - Step 5: Solve for x
x = 5,380,505,487.25/67,420.95 - Step 6: Final answer
x = 79,804.65
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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.