Finding the Fourth Proportional to 81,701.70, 122,552.55 and 68,579.70
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Solution
The fourth proportional to 81,701.70, 122,552.55 and 68,579.70 is: 102,869.55
Step by Step Solution
- Step 1: Write the proportion equation
81,701.70 : 122,552.55 = 68,579.70 : x - Step 2: Convert to fraction form
81,701.70/122,552.55 = 68,579.70/x - Step 3: Cross multiply
81,701.70x = 122,552.55 × 68,579.70 - Step 4: Simplify right side
81,701.70x = 8,404,617,113.24 - Step 5: Solve for x
x = 8,404,617,113.24/81,701.70 - Step 6: Final answer
x = 102,869.55
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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.