Finding the Fourth Proportional to 74,038.12, 102,172.50 and 40,504.12
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Solution
The fourth proportional to 74,038.12, 102,172.50 and 40,504.12 is: 55,895.63
Step by Step Solution
- Step 1: Write the proportion equation
74,038.12 : 102,172.50 = 40,504.12 : x - Step 2: Convert to fraction form
74,038.12/102,172.50 = 40,504.12/x - Step 3: Cross multiply
74,038.12x = 102,172.50 × 40,504.12 - Step 4: Simplify right side
74,038.12x = 4,138,407,200.70 - Step 5: Solve for x
x = 4,138,407,200.70/74,038.12 - Step 6: Final answer
x = 55,895.63
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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.