Finding the Fourth Proportional to 78,455.12, 108,268.26 and 42,645.08
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Solution
The fourth proportional to 78,455.12, 108,268.26 and 42,645.08 is: 58,850.32
Step by Step Solution
- Step 1: Write the proportion equation
78,455.12 : 108,268.26 = 42,645.08 : x - Step 2: Convert to fraction form
78,455.12/108,268.26 = 42,645.08/x - Step 3: Cross multiply
78,455.12x = 108,268.26 × 42,645.08 - Step 4: Simplify right side
78,455.12x = 4,617,108,609.16 - Step 5: Solve for x
x = 4,617,108,609.16/78,455.12 - Step 6: Final answer
x = 58,850.32
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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.