Finding the Fourth Proportional to 76,971.96, 115,461.18 and 24,380.28
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Solution
The fourth proportional to 76,971.96, 115,461.18 and 24,380.28 is: 36,571.45
Step by Step Solution
- Step 1: Write the proportion equation
76,971.96 : 115,461.18 = 24,380.28 : x - Step 2: Convert to fraction form
76,971.96/115,461.18 = 24,380.28/x - Step 3: Cross multiply
76,971.96x = 115,461.18 × 24,380.28 - Step 4: Simplify right side
76,971.96x = 2,814,975,897.53 - Step 5: Solve for x
x = 2,814,975,897.53/76,971.96 - Step 6: Final answer
x = 36,571.45
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1.5x scale
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.