Finding the Fourth Proportional to 68,646.80, 102,979.80 and 29,203.60
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Solution
The fourth proportional to 68,646.80, 102,979.80 and 29,203.60 is: 43,809.48
Step by Step Solution
- Step 1: Write the proportion equation
68,646.80 : 102,979.80 = 29,203.60 : x - Step 2: Convert to fraction form
68,646.80/102,979.80 = 29,203.60/x - Step 3: Cross multiply
68,646.80x = 102,979.80 × 29,203.60 - Step 4: Simplify right side
68,646.80x = 3,007,380,887.28 - Step 5: Solve for x
x = 3,007,380,887.28/68,646.80 - Step 6: Final answer
x = 43,809.48
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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.