Finding the Fourth Proportional to 81,368.13, 112,294.97 and 47,387.28
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Solution
The fourth proportional to 81,368.13, 112,294.97 and 47,387.28 is: 65,398.49
Step by Step Solution
- Step 1: Write the proportion equation
81,368.13 : 112,294.97 = 47,387.28 : x - Step 2: Convert to fraction form
81,368.13/112,294.97 = 47,387.28/x - Step 3: Cross multiply
81,368.13x = 112,294.97 × 47,387.28 - Step 4: Simplify right side
81,368.13x = 5,321,353,185.98 - Step 5: Solve for x
x = 5,321,353,185.98/81,368.13 - Step 6: Final answer
x = 65,398.49
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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.