Finding the Fourth Proportional to 85,321.14, 117,721.58 and 51,318.70
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Solution
The fourth proportional to 85,321.14, 117,721.58 and 51,318.70 is: 70,806.82
Step by Step Solution
- Step 1: Write the proportion equation
85,321.14 : 117,721.58 = 51,318.70 : x - Step 2: Convert to fraction form
85,321.14/117,721.58 = 51,318.70/x - Step 3: Cross multiply
85,321.14x = 117,721.58 × 51,318.70 - Step 4: Simplify right side
85,321.14x = 6,041,318,447.55 - Step 5: Solve for x
x = 6,041,318,447.55/85,321.14 - Step 6: Final answer
x = 70,806.82
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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.