Finding the Fourth Proportional to 81,260.24, 121,833.12 and 31,298.48
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Solution
The fourth proportional to 81,260.24, 121,833.12 and 31,298.48 is: 46,925.67
Step by Step Solution
- Step 1: Write the proportion equation
81,260.24 : 121,833.12 = 31,298.48 : x - Step 2: Convert to fraction form
81,260.24/121,833.12 = 31,298.48/x - Step 3: Cross multiply
81,260.24x = 121,833.12 × 31,298.48 - Step 4: Simplify right side
81,260.24x = 3,813,191,469.66 - Step 5: Solve for x
x = 3,813,191,469.66/81,260.24 - Step 6: Final answer
x = 46,925.67
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.