Finding the Fourth Proportional to 74,745.05, 103,148.98 and 40,753.26
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Solution
The fourth proportional to 74,745.05, 103,148.98 and 40,753.26 is: 56,239.94
Step by Step Solution
- Step 1: Write the proportion equation
74,745.05 : 103,148.98 = 40,753.26 : x - Step 2: Convert to fraction form
74,745.05/103,148.98 = 40,753.26/x - Step 3: Cross multiply
74,745.05x = 103,148.98 × 40,753.26 - Step 4: Simplify right side
74,745.05x = 4,203,657,098.79 - Step 5: Solve for x
x = 4,203,657,098.79/74,745.05 - Step 6: Final answer
x = 56,239.94
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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.