Finding the Fourth Proportional to 103,613.58, 142,975.94 and 58,287.70
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Solution
The fourth proportional to 103,613.58, 142,975.94 and 58,287.70 is: 80,430.95
Step by Step Solution
- Step 1: Write the proportion equation
103,613.58 : 142,975.94 = 58,287.70 : x - Step 2: Convert to fraction form
103,613.58/142,975.94 = 58,287.70/x - Step 3: Cross multiply
103,613.58x = 142,975.94 × 58,287.70 - Step 4: Simplify right side
103,613.58x = 8,333,738,585.22 - Step 5: Solve for x
x = 8,333,738,585.22/103,613.58 - Step 6: Final answer
x = 80,430.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.