Finding the Fourth Proportional to 87,932.82, 121,315.41 and 56,116.02
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Solution
The fourth proportional to 87,932.82, 121,315.41 and 56,116.02 is: 77,419.76
Step by Step Solution
- Step 1: Write the proportion equation
87,932.82 : 121,315.41 = 56,116.02 : x - Step 2: Convert to fraction form
87,932.82/121,315.41 = 56,116.02/x - Step 3: Cross multiply
87,932.82x = 121,315.41 × 56,116.02 - Step 4: Simplify right side
87,932.82x = 6,807,737,973.87 - Step 5: Solve for x
x = 6,807,737,973.87/87,932.82 - Step 6: Final answer
x = 77,419.76
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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.