Finding the Fourth Proportional to 76,648.99, 105,775.59 and 43,114.99
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Solution
The fourth proportional to 76,648.99, 105,775.59 and 43,114.99 is: 59,498.68
Step by Step Solution
- Step 1: Write the proportion equation
76,648.99 : 105,775.59 = 43,114.99 : x - Step 2: Convert to fraction form
76,648.99/105,775.59 = 43,114.99/x - Step 3: Cross multiply
76,648.99x = 105,775.59 × 43,114.99 - Step 4: Simplify right side
76,648.99x = 4,560,513,505.09 - Step 5: Solve for x
x = 4,560,513,505.09/76,648.99 - Step 6: Final answer
x = 59,498.68
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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.