Finding the Fourth Proportional to 87,864.77, 121,253.95 and 47,578.53
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Solution
The fourth proportional to 87,864.77, 121,253.95 and 47,578.53 is: 65,658.68
Step by Step Solution
- Step 1: Write the proportion equation
87,864.77 : 121,253.95 = 47,578.53 : x - Step 2: Convert to fraction form
87,864.77/121,253.95 = 47,578.53/x - Step 3: Cross multiply
87,864.77x = 121,253.95 × 47,578.53 - Step 4: Simplify right side
87,864.77x = 5,769,084,697.69 - Step 5: Solve for x
x = 5,769,084,697.69/87,864.77 - Step 6: Final answer
x = 65,658.68
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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.