Finding the Fourth Proportional to 87,713.32, 121,044.30 and 47,426.99
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Solution
The fourth proportional to 87,713.32, 121,044.30 and 47,426.99 is: 65,449.20
Step by Step Solution
- Step 1: Write the proportion equation
87,713.32 : 121,044.30 = 47,426.99 : x - Step 2: Convert to fraction form
87,713.32/121,044.30 = 47,426.99/x - Step 3: Cross multiply
87,713.32x = 121,044.30 × 47,426.99 - Step 4: Simplify right side
87,713.32x = 5,740,766,568.52 - Step 5: Solve for x
x = 5,740,766,568.52/87,713.32 - Step 6: Final answer
x = 65,449.20
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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.