Finding the Fourth Proportional to 76,420.80, 114,495.68 and 65,213.76
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Solution
The fourth proportional to 76,420.80, 114,495.68 and 65,213.76 is: 97,704.99
Step by Step Solution
- Step 1: Write the proportion equation
76,420.80 : 114,495.68 = 65,213.76 : x - Step 2: Convert to fraction form
76,420.80/114,495.68 = 65,213.76/x - Step 3: Cross multiply
76,420.80x = 114,495.68 × 65,213.76 - Step 4: Simplify right side
76,420.80x = 7,466,693,796.56 - Step 5: Solve for x
x = 7,466,693,796.56/76,420.80 - Step 6: Final answer
x = 97,704.99
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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.