Finding the Fourth Proportional to 99,823.48, 137,759.41 and 56,809.14
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Solution
The fourth proportional to 99,823.48, 137,759.41 and 56,809.14 is: 78,398.32
Step by Step Solution
- Step 1: Write the proportion equation
99,823.48 : 137,759.41 = 56,809.14 : x - Step 2: Convert to fraction form
99,823.48/137,759.41 = 56,809.14/x - Step 3: Cross multiply
99,823.48x = 137,759.41 × 56,809.14 - Step 4: Simplify right side
99,823.48x = 7,825,993,609.01 - Step 5: Solve for x
x = 7,825,993,609.01/99,823.48 - Step 6: Final answer
x = 78,398.32
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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.