Finding the Fourth Proportional to 74,458.95, 102,753.58 and 42,628.09
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Solution
The fourth proportional to 74,458.95, 102,753.58 and 42,628.09 is: 58,826.89
Step by Step Solution
- Step 1: Write the proportion equation
74,458.95 : 102,753.58 = 42,628.09 : x - Step 2: Convert to fraction form
74,458.95/102,753.58 = 42,628.09/x - Step 3: Cross multiply
74,458.95x = 102,753.58 × 42,628.09 - Step 4: Simplify right side
74,458.95x = 4,380,188,342.29 - Step 5: Solve for x
x = 4,380,188,342.29/74,458.95 - Step 6: Final answer
x = 58,826.89
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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.