Finding the Fourth Proportional to 99,739.74, 137,649.06 and 56,732.70
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Solution
The fourth proportional to 99,739.74, 137,649.06 and 56,732.70 is: 78,295.80
Step by Step Solution
- Step 1: Write the proportion equation
99,739.74 : 137,649.06 = 56,732.70 : x - Step 2: Convert to fraction form
99,739.74/137,649.06 = 56,732.70/x - Step 3: Cross multiply
99,739.74x = 137,649.06 × 56,732.70 - Step 4: Simplify right side
99,739.74x = 7,809,202,826.26 - Step 5: Solve for x
x = 7,809,202,826.26/99,739.74 - Step 6: Final answer
x = 78,295.80
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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.