Finding the Fourth Proportional to 75,345.12, 103,976.88 and 41,811.68
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Solution
The fourth proportional to 75,345.12, 103,976.88 and 41,811.68 is: 57,700.46
Step by Step Solution
- Step 1: Write the proportion equation
75,345.12 : 103,976.88 = 41,811.68 : x - Step 2: Convert to fraction form
75,345.12/103,976.88 = 41,811.68/x - Step 3: Cross multiply
75,345.12x = 103,976.88 × 41,811.68 - Step 4: Simplify right side
75,345.12x = 4,347,448,033.96 - Step 5: Solve for x
x = 4,347,448,033.96/75,345.12 - Step 6: Final answer
x = 57,700.46
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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.