Finding the Fourth Proportional to 74,430.75, 102,716.06 and 40,896.75
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Solution
The fourth proportional to 74,430.75, 102,716.06 and 40,896.75 is: 56,438.41
Step by Step Solution
- Step 1: Write the proportion equation
74,430.75 : 102,716.06 = 40,896.75 : x - Step 2: Convert to fraction form
74,430.75/102,716.06 = 40,896.75/x - Step 3: Cross multiply
74,430.75x = 102,716.06 × 40,896.75 - Step 4: Simplify right side
74,430.75x = 4,200,753,026.81 - Step 5: Solve for x
x = 4,200,753,026.81/74,430.75 - Step 6: Final answer
x = 56,438.41
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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.