Finding the Fourth Proportional to 81,335.93, 112,261.14 and 49,515.08
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Solution
The fourth proportional to 81,335.93, 112,261.14 and 49,515.08 is: 68,341.50
Step by Step Solution
- Step 1: Write the proportion equation
81,335.93 : 112,261.14 = 49,515.08 : x - Step 2: Convert to fraction form
81,335.93/112,261.14 = 49,515.08/x - Step 3: Cross multiply
81,335.93x = 112,261.14 × 49,515.08 - Step 4: Simplify right side
81,335.93x = 5,558,618,766.69 - Step 5: Solve for x
x = 5,558,618,766.69/81,335.93 - Step 6: Final answer
x = 68,341.50
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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.