Finding the Fourth Proportional to 83,120.74, 124,865.64 and 51,554.13
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Solution
The fourth proportional to 83,120.74, 124,865.64 and 51,554.13 is: 77,445.65
Step by Step Solution
- Step 1: Write the proportion equation
83,120.74 : 124,865.64 = 51,554.13 : x - Step 2: Convert to fraction form
83,120.74/124,865.64 = 51,554.13/x - Step 3: Cross multiply
83,120.74x = 124,865.64 × 51,554.13 - Step 4: Simplify right side
83,120.74x = 6,437,339,437.09 - Step 5: Solve for x
x = 6,437,339,437.09/83,120.74 - Step 6: Final answer
x = 77,445.65
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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.