Finding the Fourth Proportional to 81,294.40, 121,954.26 and 48,038.44
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Solution
The fourth proportional to 81,294.40, 121,954.26 and 48,038.44 is: 72,065.14
Step by Step Solution
- Step 1: Write the proportion equation
81,294.40 : 121,954.26 = 48,038.44 : x - Step 2: Convert to fraction form
81,294.40/121,954.26 = 48,038.44/x - Step 3: Cross multiply
81,294.40x = 121,954.26 × 48,038.44 - Step 4: Simplify right side
81,294.40x = 5,858,492,401.75 - Step 5: Solve for x
x = 5,858,492,401.75/81,294.40 - Step 6: Final answer
x = 72,065.14
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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.