Finding the Fourth Proportional to 74,822.10, 103,256.70 and 40,832.79
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Solution
The fourth proportional to 74,822.10, 103,256.70 and 40,832.79 is: 56,350.45
Step by Step Solution
- Step 1: Write the proportion equation
74,822.10 : 103,256.70 = 40,832.79 : x - Step 2: Convert to fraction form
74,822.10/103,256.70 = 40,832.79/x - Step 3: Cross multiply
74,822.10x = 103,256.70 × 40,832.79 - Step 4: Simplify right side
74,822.10x = 4,216,259,147.19 - Step 5: Solve for x
x = 4,216,259,147.19/74,822.10 - Step 6: Final answer
x = 56,350.45
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1.5x scale
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.