Finding the Fourth Proportional to 74,959.02, 103,455.36 and 43,121.70
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Solution
The fourth proportional to 74,959.02, 103,455.36 and 43,121.70 is: 59,514.80
Step by Step Solution
- Step 1: Write the proportion equation
74,959.02 : 103,455.36 = 43,121.70 : x - Step 2: Convert to fraction form
74,959.02/103,455.36 = 43,121.70/x - Step 3: Cross multiply
74,959.02x = 103,455.36 × 43,121.70 - Step 4: Simplify right side
74,959.02x = 4,461,170,997.31 - Step 5: Solve for x
x = 4,461,170,997.31/74,959.02 - Step 6: Final answer
x = 59,514.80
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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.