Finding the Fourth Proportional to 86,443.20, 129,664.80 and 24,113.70
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Solution
The fourth proportional to 86,443.20, 129,664.80 and 24,113.70 is: 36,170.55
Step by Step Solution
- Step 1: Write the proportion equation
86,443.20 : 129,664.80 = 24,113.70 : x - Step 2: Convert to fraction form
86,443.20/129,664.80 = 24,113.70/x - Step 3: Cross multiply
86,443.20x = 129,664.80 × 24,113.70 - Step 4: Simplify right side
86,443.20x = 3,126,698,087.76 - Step 5: Solve for x
x = 3,126,698,087.76/86,443.20 - Step 6: Final answer
x = 36,170.55
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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.