Finding the Fourth Proportional to 74,282.88, 102,511.68 and 40,749.12
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Solution
The fourth proportional to 74,282.88, 102,511.68 and 40,749.12 is: 56,234.50
Step by Step Solution
- Step 1: Write the proportion equation
74,282.88 : 102,511.68 = 40,749.12 : x - Step 2: Convert to fraction form
74,282.88/102,511.68 = 40,749.12/x - Step 3: Cross multiply
74,282.88x = 102,511.68 × 40,749.12 - Step 4: Simplify right side
74,282.88x = 4,177,260,749.72 - Step 5: Solve for x
x = 4,177,260,749.72/74,282.88 - Step 6: Final answer
x = 56,234.50
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1.5x scale
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.