Finding the Fourth Proportional to 72,786.84, 100,359.18 and 48,862.68
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Solution
The fourth proportional to 72,786.84, 100,359.18 and 48,862.68 is: 67,372.32
Step by Step Solution
- Step 1: Write the proportion equation
72,786.84 : 100,359.18 = 48,862.68 : x - Step 2: Convert to fraction form
72,786.84/100,359.18 = 48,862.68/x - Step 3: Cross multiply
72,786.84x = 100,359.18 × 48,862.68 - Step 4: Simplify right side
72,786.84x = 4,903,818,497.40 - Step 5: Solve for x
x = 4,903,818,497.40/72,786.84 - Step 6: Final answer
x = 67,372.32
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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.