Finding the Fourth Proportional to 74,572.40, 102,912.07 and 40,583.08
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Solution
The fourth proportional to 74,572.40, 102,912.07 and 40,583.08 is: 56,005.82
Step by Step Solution
- Step 1: Write the proportion equation
74,572.40 : 102,912.07 = 40,583.08 : x - Step 2: Convert to fraction form
74,572.40/102,912.07 = 40,583.08/x - Step 3: Cross multiply
74,572.40x = 102,912.07 × 40,583.08 - Step 4: Simplify right side
74,572.40x = 4,176,488,769.78 - Step 5: Solve for x
x = 4,176,488,769.78/74,572.40 - Step 6: Final answer
x = 56,005.82
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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.