Finding the Fourth Proportional to 77,761.68, 107,309.84 and 43,306.08
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Solution
The fourth proportional to 77,761.68, 107,309.84 and 43,306.08 is: 59,761.68
Step by Step Solution
- Step 1: Write the proportion equation
77,761.68 : 107,309.84 = 43,306.08 : x - Step 2: Convert to fraction form
77,761.68/107,309.84 = 43,306.08/x - Step 3: Cross multiply
77,761.68x = 107,309.84 × 43,306.08 - Step 4: Simplify right side
77,761.68x = 4,647,168,515.83 - Step 5: Solve for x
x = 4,647,168,515.83/77,761.68 - Step 6: Final answer
x = 59,761.68
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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.