Finding the Fourth Proportional to 76,243.15, 105,222.87 and 42,258.99
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Solution
The fourth proportional to 76,243.15, 105,222.87 and 42,258.99 is: 58,321.47
Step by Step Solution
- Step 1: Write the proportion equation
76,243.15 : 105,222.87 = 42,258.99 : x - Step 2: Convert to fraction form
76,243.15/105,222.87 = 42,258.99/x - Step 3: Cross multiply
76,243.15x = 105,222.87 × 42,258.99 - Step 4: Simplify right side
76,243.15x = 4,446,612,211.10 - Step 5: Solve for x
x = 4,446,612,211.10/76,243.15 - Step 6: Final answer
x = 58,321.47
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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.