Finding the Fourth Proportional to 81,191.24, 121,480.62 and 47,929.40
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Solution
The fourth proportional to 81,191.24, 121,480.62 and 47,929.40 is: 71,713.32
Step by Step Solution
- Step 1: Write the proportion equation
81,191.24 : 121,480.62 = 47,929.40 : x - Step 2: Convert to fraction form
81,191.24/121,480.62 = 47,929.40/x - Step 3: Cross multiply
81,191.24x = 121,480.62 × 47,929.40 - Step 4: Simplify right side
81,191.24x = 5,822,493,228.23 - Step 5: Solve for x
x = 5,822,493,228.23/81,191.24 - Step 6: Final answer
x = 71,713.32
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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.