Finding the Fourth Proportional to 81,931.70, 113,067.86 and 46,122.99
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Solution
The fourth proportional to 81,931.70, 113,067.86 and 46,122.99 is: 63,650.92
Step by Step Solution
- Step 1: Write the proportion equation
81,931.70 : 113,067.86 = 46,122.99 : x - Step 2: Convert to fraction form
81,931.70/113,067.86 = 46,122.99/x - Step 3: Cross multiply
81,931.70x = 113,067.86 × 46,122.99 - Step 4: Simplify right side
81,931.70x = 5,215,027,545.49 - Step 5: Solve for x
x = 5,215,027,545.49/81,931.70 - Step 6: Final answer
x = 63,650.92
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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.