Finding the Fourth Proportional to 81,923.62, 122,688.60 and 46,756.66
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Solution
The fourth proportional to 81,923.62, 122,688.60 and 46,756.66 is: 70,022.65
Step by Step Solution
- Step 1: Write the proportion equation
81,923.62 : 122,688.60 = 46,756.66 : x - Step 2: Convert to fraction form
81,923.62/122,688.60 = 46,756.66/x - Step 3: Cross multiply
81,923.62x = 122,688.60 × 46,756.66 - Step 4: Simplify right side
81,923.62x = 5,736,509,156.08 - Step 5: Solve for x
x = 5,736,509,156.08/81,923.62 - Step 6: Final answer
x = 70,022.65
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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.