Finding the Fourth Proportional to 80,968.53, 121,452.80 and 28,378.01
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Solution
The fourth proportional to 80,968.53, 121,452.80 and 28,378.01 is: 42,567.02
Step by Step Solution
- Step 1: Write the proportion equation
80,968.53 : 121,452.80 = 28,378.01 : x - Step 2: Convert to fraction form
80,968.53/121,452.80 = 28,378.01/x - Step 3: Cross multiply
80,968.53x = 121,452.80 × 28,378.01 - Step 4: Simplify right side
80,968.53x = 3,446,588,772.93 - Step 5: Solve for x
x = 3,446,588,772.93/80,968.53 - Step 6: Final answer
x = 42,567.02
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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.