Finding the Fourth Proportional to 90,459.05, 124,814.85 and 52,217.99
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Solution
The fourth proportional to 90,459.05, 124,814.85 and 52,217.99 is: 72,050.07
Step by Step Solution
- Step 1: Write the proportion equation
90,459.05 : 124,814.85 = 52,217.99 : x - Step 2: Convert to fraction form
90,459.05/124,814.85 = 52,217.99/x - Step 3: Cross multiply
90,459.05x = 124,814.85 × 52,217.99 - Step 4: Simplify right side
90,459.05x = 6,517,580,589.15 - Step 5: Solve for x
x = 6,517,580,589.15/90,459.05 - Step 6: Final answer
x = 72,050.07
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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.