Finding the Fourth Proportional to 81,308.79, 121,950.84 and 22,149.12
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Solution
The fourth proportional to 81,308.79, 121,950.84 and 22,149.12 is: 33,220.32
Step by Step Solution
- Step 1: Write the proportion equation
81,308.79 : 121,950.84 = 22,149.12 : x - Step 2: Convert to fraction form
81,308.79/121,950.84 = 22,149.12/x - Step 3: Cross multiply
81,308.79x = 121,950.84 × 22,149.12 - Step 4: Simplify right side
81,308.79x = 2,701,103,789.26 - Step 5: Solve for x
x = 2,701,103,789.26/81,308.79 - Step 6: Final answer
x = 33,220.32
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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.