Finding the Fourth Proportional to 78,245.11, 107,968.35 and 46,407.79
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Solution
The fourth proportional to 78,245.11, 107,968.35 and 46,407.79 is: 64,036.88
Step by Step Solution
- Step 1: Write the proportion equation
78,245.11 : 107,968.35 = 46,407.79 : x - Step 2: Convert to fraction form
78,245.11/107,968.35 = 46,407.79/x - Step 3: Cross multiply
78,245.11x = 107,968.35 × 46,407.79 - Step 4: Simplify right side
78,245.11x = 5,010,572,513.45 - Step 5: Solve for x
x = 5,010,572,513.45/78,245.11 - Step 6: Final answer
x = 64,036.88
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1.5x scale
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.