Finding the Fourth Proportional to 81,852.81, 122,780.12 and 22,688.98
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Solution
The fourth proportional to 81,852.81, 122,780.12 and 22,688.98 is: 34,033.72
Step by Step Solution
- Step 1: Write the proportion equation
81,852.81 : 122,780.12 = 22,688.98 : x - Step 2: Convert to fraction form
81,852.81/122,780.12 = 22,688.98/x - Step 3: Cross multiply
81,852.81x = 122,780.12 × 22,688.98 - Step 4: Simplify right side
81,852.81x = 2,785,755,687.08 - Step 5: Solve for x
x = 2,785,755,687.08/81,852.81 - Step 6: Final answer
x = 34,033.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.