Finding the Fourth Proportional to 74,728.34, 103,124.27 and 40,736.09
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Solution
The fourth proportional to 74,728.34, 103,124.27 and 40,736.09 is: 56,215.34
Step by Step Solution
- Step 1: Write the proportion equation
74,728.34 : 103,124.27 = 40,736.09 : x - Step 2: Convert to fraction form
74,728.34/103,124.27 = 40,736.09/x - Step 3: Cross multiply
74,728.34x = 103,124.27 × 40,736.09 - Step 4: Simplify right side
74,728.34x = 4,200,878,824.60 - Step 5: Solve for x
x = 4,200,878,824.60/74,728.34 - Step 6: Final answer
x = 56,215.34
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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.