Finding the Fourth Proportional to 81,193.44, 121,764.24 and 25,776.48
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Solution
The fourth proportional to 81,193.44, 121,764.24 and 25,776.48 is: 38,656.49
Step by Step Solution
- Step 1: Write the proportion equation
81,193.44 : 121,764.24 = 25,776.48 : x - Step 2: Convert to fraction form
81,193.44/121,764.24 = 25,776.48/x - Step 3: Cross multiply
81,193.44x = 121,764.24 × 25,776.48 - Step 4: Simplify right side
81,193.44x = 3,138,653,497.08 - Step 5: Solve for x
x = 3,138,653,497.08/81,193.44 - Step 6: Final answer
x = 38,656.49
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1.5x scale
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.