Finding the Fourth Proportional to 76,988.60, 115,601.70 and 41,996.60
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Solution
The fourth proportional to 76,988.60, 115,601.70 and 41,996.60 is: 63,059.70
Step by Step Solution
- Step 1: Write the proportion equation
76,988.60 : 115,601.70 = 41,996.60 : x - Step 2: Convert to fraction form
76,988.60/115,601.70 = 41,996.60/x - Step 3: Cross multiply
76,988.60x = 115,601.70 × 41,996.60 - Step 4: Simplify right side
76,988.60x = 4,854,878,354.22 - Step 5: Solve for x
x = 4,854,878,354.22/76,988.60 - Step 6: Final answer
x = 63,059.70
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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.