Finding the Fourth Proportional to 83,920.53, 125,880.80 and 28,516.53
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Solution
The fourth proportional to 83,920.53, 125,880.80 and 28,516.53 is: 42,774.80
Step by Step Solution
- Step 1: Write the proportion equation
83,920.53 : 125,880.80 = 28,516.53 : x - Step 2: Convert to fraction form
83,920.53/125,880.80 = 28,516.53/x - Step 3: Cross multiply
83,920.53x = 125,880.80 × 28,516.53 - Step 4: Simplify right side
83,920.53x = 3,589,683,609.62 - Step 5: Solve for x
x = 3,589,683,609.62/83,920.53 - Step 6: Final answer
x = 42,774.80
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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.