Finding the Fourth Proportional to 74,403.23, 102,647.51 and 42,130.44
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Solution
The fourth proportional to 74,403.23, 102,647.51 and 42,130.44 is: 58,123.62
Step by Step Solution
- Step 1: Write the proportion equation
74,403.23 : 102,647.51 = 42,130.44 : x - Step 2: Convert to fraction form
74,403.23/102,647.51 = 42,130.44/x - Step 3: Cross multiply
74,403.23x = 102,647.51 × 42,130.44 - Step 4: Simplify right side
74,403.23x = 4,324,584,761.20 - Step 5: Solve for x
x = 4,324,584,761.20/74,403.23 - Step 6: Final answer
x = 58,123.62
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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.