Finding the Fourth Proportional to 74,933.12, 103,406.50 and 40,940.88
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Solution
The fourth proportional to 74,933.12, 103,406.50 and 40,940.88 is: 56,497.75
Step by Step Solution
- Step 1: Write the proportion equation
74,933.12 : 103,406.50 = 40,940.88 : x - Step 2: Convert to fraction form
74,933.12/103,406.50 = 40,940.88/x - Step 3: Cross multiply
74,933.12x = 103,406.50 × 40,940.88 - Step 4: Simplify right side
74,933.12x = 4,233,552,385.98 - Step 5: Solve for x
x = 4,233,552,385.98/74,933.12 - Step 6: Final answer
x = 56,497.75
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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.