Finding the Fourth Proportional to 74,782.20, 103,201.74 and 42,957.48
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Solution
The fourth proportional to 74,782.20, 103,201.74 and 42,957.48 is: 59,282.65
Step by Step Solution
- Step 1: Write the proportion equation
74,782.20 : 103,201.74 = 42,957.48 : x - Step 2: Convert to fraction form
74,782.20/103,201.74 = 42,957.48/x - Step 3: Cross multiply
74,782.20x = 103,201.74 × 42,957.48 - Step 4: Simplify right side
74,782.20x = 4,433,286,682.02 - Step 5: Solve for x
x = 4,433,286,682.02/74,782.20 - Step 6: Final answer
x = 59,282.65
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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.