Finding the Fourth Proportional to 86,135.68, 118,867.68 and 48,409.60
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Solution
The fourth proportional to 86,135.68, 118,867.68 and 48,409.60 is: 66,805.50
Step by Step Solution
- Step 1: Write the proportion equation
86,135.68 : 118,867.68 = 48,409.60 : x - Step 2: Convert to fraction form
86,135.68/118,867.68 = 48,409.60/x - Step 3: Cross multiply
86,135.68x = 118,867.68 × 48,409.60 - Step 4: Simplify right side
86,135.68x = 5,754,336,841.73 - Step 5: Solve for x
x = 5,754,336,841.73/86,135.68 - Step 6: Final answer
x = 66,805.50
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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.