Finding the Fourth Proportional to 74,797.96, 103,221.66 and 40,806.98
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Solution
The fourth proportional to 74,797.96, 103,221.66 and 40,806.98 is: 56,313.89
Step by Step Solution
- Step 1: Write the proportion equation
74,797.96 : 103,221.66 = 40,806.98 : x - Step 2: Convert to fraction form
74,797.96/103,221.66 = 40,806.98/x - Step 3: Cross multiply
74,797.96x = 103,221.66 × 40,806.98 - Step 4: Simplify right side
74,797.96x = 4,212,164,215.19 - Step 5: Solve for x
x = 4,212,164,215.19/74,797.96 - Step 6: Final answer
x = 56,313.89
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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.