Finding the Fourth Proportional to 83,492.35, 125,236.79 and 20,312.80
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Solution
The fourth proportional to 83,492.35, 125,236.79 and 20,312.80 is: 30,468.78
Step by Step Solution
- Step 1: Write the proportion equation
83,492.35 : 125,236.79 = 20,312.80 : x - Step 2: Convert to fraction form
83,492.35/125,236.79 = 20,312.80/x - Step 3: Cross multiply
83,492.35x = 125,236.79 × 20,312.80 - Step 4: Simplify right side
83,492.35x = 2,543,909,612.13 - Step 5: Solve for x
x = 2,543,909,612.13/83,492.35 - Step 6: Final answer
x = 30,468.78
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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.