Finding the Fourth Proportional to 77,343.12, 106,735.68 and 43,809.12
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Solution
The fourth proportional to 77,343.12, 106,735.68 and 43,809.12 is: 60,457.82
Step by Step Solution
- Step 1: Write the proportion equation
77,343.12 : 106,735.68 = 43,809.12 : x - Step 2: Convert to fraction form
77,343.12/106,735.68 = 43,809.12/x - Step 3: Cross multiply
77,343.12x = 106,735.68 × 43,809.12 - Step 4: Simplify right side
77,343.12x = 4,675,996,213.40 - Step 5: Solve for x
x = 4,675,996,213.40/77,343.12 - Step 6: Final answer
x = 60,457.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.