Finding the Fourth Proportional to 81,227.19, 121,840.79 and 53,518.71
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Solution
The fourth proportional to 81,227.19, 121,840.79 and 53,518.71 is: 80,278.07
Step by Step Solution
- Step 1: Write the proportion equation
81,227.19 : 121,840.79 = 53,518.71 : x - Step 2: Convert to fraction form
81,227.19/121,840.79 = 53,518.71/x - Step 3: Cross multiply
81,227.19x = 121,840.79 × 53,518.71 - Step 4: Simplify right side
81,227.19x = 6,520,761,638.59 - Step 5: Solve for x
x = 6,520,761,638.59/81,227.19 - Step 6: Final answer
x = 80,278.07
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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.