Finding the Fourth Proportional to 87,965.23, 121,390.71 and 49,723.44
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Solution
The fourth proportional to 87,965.23, 121,390.71 and 49,723.44 is: 68,617.60
Step by Step Solution
- Step 1: Write the proportion equation
87,965.23 : 121,390.71 = 49,723.44 : x - Step 2: Convert to fraction form
87,965.23/121,390.71 = 49,723.44/x - Step 3: Cross multiply
87,965.23x = 121,390.71 × 49,723.44 - Step 4: Simplify right side
87,965.23x = 6,035,962,829.67 - Step 5: Solve for x
x = 6,035,962,829.67/87,965.23 - Step 6: Final answer
x = 68,617.60
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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.