Finding the Fourth Proportional to 76,204.18, 105,162.60 and 42,213.18
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Solution
The fourth proportional to 76,204.18, 105,162.60 and 42,213.18 is: 58,254.66
Step by Step Solution
- Step 1: Write the proportion equation
76,204.18 : 105,162.60 = 42,213.18 : x - Step 2: Convert to fraction form
76,204.18/105,162.60 = 42,213.18/x - Step 3: Cross multiply
76,204.18x = 105,162.60 × 42,213.18 - Step 4: Simplify right side
76,204.18x = 4,439,248,315.73 - Step 5: Solve for x
x = 4,439,248,315.73/76,204.18 - Step 6: Final answer
x = 58,254.66
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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.