Finding the Fourth Proportional to 81,577.84, 112,577.73 and 47,609.79
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Solution
The fourth proportional to 81,577.84, 112,577.73 and 47,609.79 is: 65,701.69
Step by Step Solution
- Step 1: Write the proportion equation
81,577.84 : 112,577.73 = 47,609.79 : x - Step 2: Convert to fraction form
81,577.84/112,577.73 = 47,609.79/x - Step 3: Cross multiply
81,577.84x = 112,577.73 × 47,609.79 - Step 4: Simplify right side
81,577.84x = 5,359,802,083.98 - Step 5: Solve for x
x = 5,359,802,083.98/81,577.84 - Step 6: Final answer
x = 65,701.69
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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.