Finding the Fourth Proportional to 83,492.21, 115,236.63 and 76,767.18
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Solution
The fourth proportional to 83,492.21, 115,236.63 and 76,767.18 is: 105,954.70
Step by Step Solution
- Step 1: Write the proportion equation
83,492.21 : 115,236.63 = 76,767.18 : x - Step 2: Convert to fraction form
83,492.21/115,236.63 = 76,767.18/x - Step 3: Cross multiply
83,492.21x = 115,236.63 × 76,767.18 - Step 4: Simplify right side
83,492.21x = 8,846,391,117.80 - Step 5: Solve for x
x = 8,846,391,117.80/83,492.21 - Step 6: Final answer
x = 105,954.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.