Finding the Fourth Proportional to 74,931.92, 103,404.84 and 40,939.67
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Solution
The fourth proportional to 74,931.92, 103,404.84 and 40,939.67 is: 56,496.09
Step by Step Solution
- Step 1: Write the proportion equation
74,931.92 : 103,404.84 = 40,939.67 : x - Step 2: Convert to fraction form
74,931.92/103,404.84 = 40,939.67/x - Step 3: Cross multiply
74,931.92x = 103,404.84 × 40,939.67 - Step 4: Simplify right side
74,931.92x = 4,233,360,391.55 - Step 5: Solve for x
x = 4,233,360,391.55/74,931.92 - Step 6: Final answer
x = 56,496.09
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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.