Finding the Fourth Proportional to 74,121.24, 102,289.92 and 40,587.24
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Solution
The fourth proportional to 74,121.24, 102,289.92 and 40,587.24 is: 56,011.82
Step by Step Solution
- Step 1: Write the proportion equation
74,121.24 : 102,289.92 = 40,587.24 : x - Step 2: Convert to fraction form
74,121.24/102,289.92 = 40,587.24/x - Step 3: Cross multiply
74,121.24x = 102,289.92 × 40,587.24 - Step 4: Simplify right side
74,121.24x = 4,151,665,532.62 - Step 5: Solve for x
x = 4,151,665,532.62/74,121.24 - Step 6: Final answer
x = 56,011.82
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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.