Finding the Fourth Proportional to 81,661.11, 112,701.36 and 47,677.95
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Solution
The fourth proportional to 81,661.11, 112,701.36 and 47,677.95 is: 65,800.84
Step by Step Solution
- Step 1: Write the proportion equation
81,661.11 : 112,701.36 = 47,677.95 : x - Step 2: Convert to fraction form
81,661.11/112,701.36 = 47,677.95/x - Step 3: Cross multiply
81,661.11x = 112,701.36 × 47,677.95 - Step 4: Simplify right side
81,661.11x = 5,373,369,807.01 - Step 5: Solve for x
x = 5,373,369,807.01/81,661.11 - Step 6: Final answer
x = 65,800.84
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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.