Finding the Fourth Proportional to 83,908.20, 125,915.41 and 76,026.80
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Solution
The fourth proportional to 83,908.20, 125,915.41 and 76,026.80 is: 114,088.32
Step by Step Solution
- Step 1: Write the proportion equation
83,908.20 : 125,915.41 = 76,026.80 : x - Step 2: Convert to fraction form
83,908.20/125,915.41 = 76,026.80/x - Step 3: Cross multiply
83,908.20x = 125,915.41 × 76,026.80 - Step 4: Simplify right side
83,908.20x = 9,572,946,102.81 - Step 5: Solve for x
x = 9,572,946,102.81/83,908.20 - Step 6: Final answer
x = 114,088.32
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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.