Finding the Fourth Proportional to 81,866.04, 113,177.97 and 81,118.82
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Solution
The fourth proportional to 81,866.04, 113,177.97 and 81,118.82 is: 112,144.95
Step by Step Solution
- Step 1: Write the proportion equation
81,866.04 : 113,177.97 = 81,118.82 : x - Step 2: Convert to fraction form
81,866.04/113,177.97 = 81,118.82/x - Step 3: Cross multiply
81,866.04x = 113,177.97 × 81,118.82 - Step 4: Simplify right side
81,866.04x = 9,180,862,810.51 - Step 5: Solve for x
x = 9,180,862,810.51/81,866.04 - Step 6: Final answer
x = 112,144.95
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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.