Finding the Fourth Proportional to 81,026.96, 121,540.44 and 21,862.63
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Solution
The fourth proportional to 81,026.96, 121,540.44 and 21,862.63 is: 32,793.95
Step by Step Solution
- Step 1: Write the proportion equation
81,026.96 : 121,540.44 = 21,862.63 : x - Step 2: Convert to fraction form
81,026.96/121,540.44 = 21,862.63/x - Step 3: Cross multiply
81,026.96x = 121,540.44 × 21,862.63 - Step 4: Simplify right side
81,026.96x = 2,657,193,903.67 - Step 5: Solve for x
x = 2,657,193,903.67/81,026.96 - Step 6: Final answer
x = 32,793.95
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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.