Finding the Fourth Proportional to 87,517.68, 120,769.08 and 51,699.12
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Solution
The fourth proportional to 87,517.68, 120,769.08 and 51,699.12 is: 71,341.64
Step by Step Solution
- Step 1: Write the proportion equation
87,517.68 : 120,769.08 = 51,699.12 : x - Step 2: Convert to fraction form
87,517.68/120,769.08 = 51,699.12/x - Step 3: Cross multiply
87,517.68x = 120,769.08 × 51,699.12 - Step 4: Simplify right side
87,517.68x = 6,243,655,159.21 - Step 5: Solve for x
x = 6,243,655,159.21/87,517.68 - Step 6: Final answer
x = 71,341.64
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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.