Finding the Fourth Proportional to 81,226.69, 121,840.04 and 53,518.21
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Solution
The fourth proportional to 81,226.69, 121,840.04 and 53,518.21 is: 80,277.32
Step by Step Solution
- Step 1: Write the proportion equation
81,226.69 : 121,840.04 = 53,518.21 : x - Step 2: Convert to fraction form
81,226.69/121,840.04 = 53,518.21/x - Step 3: Cross multiply
81,226.69x = 121,840.04 × 53,518.21 - Step 4: Simplify right side
81,226.69x = 6,520,660,579.54 - Step 5: Solve for x
x = 6,520,660,579.54/81,226.69 - Step 6: Final answer
x = 80,277.32
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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.