Finding the Fourth Proportional to 81,374.63, 122,128.16 and 41,943.02
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Solution
The fourth proportional to 81,374.63, 122,128.16 and 41,943.02 is: 62,948.65
Step by Step Solution
- Step 1: Write the proportion equation
81,374.63 : 122,128.16 = 41,943.02 : x - Step 2: Convert to fraction form
81,374.63/122,128.16 = 41,943.02/x - Step 3: Cross multiply
81,374.63x = 122,128.16 × 41,943.02 - Step 4: Simplify right side
81,374.63x = 5,122,423,037.09 - Step 5: Solve for x
x = 5,122,423,037.09/81,374.63 - Step 6: Final answer
x = 62,948.65
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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.