Finding the Fourth Proportional to 74,394.50, 102,635.44 and 42,121.68
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Solution
The fourth proportional to 74,394.50, 102,635.44 and 42,121.68 is: 58,111.52
Step by Step Solution
- Step 1: Write the proportion equation
74,394.50 : 102,635.44 = 42,121.68 : x - Step 2: Convert to fraction form
74,394.50/102,635.44 = 42,121.68/x - Step 3: Cross multiply
74,394.50x = 102,635.44 × 42,121.68 - Step 4: Simplify right side
74,394.50x = 4,323,177,584.06 - Step 5: Solve for x
x = 4,323,177,584.06/74,394.50 - Step 6: Final answer
x = 58,111.52
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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.