Finding the Fourth Proportional to 74,772.10, 112,201.35 and 28,029.70
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Solution
The fourth proportional to 74,772.10, 112,201.35 and 28,029.70 is: 42,060.74
Step by Step Solution
- Step 1: Write the proportion equation
74,772.10 : 112,201.35 = 28,029.70 : x - Step 2: Convert to fraction form
74,772.10/112,201.35 = 28,029.70/x - Step 3: Cross multiply
74,772.10x = 112,201.35 × 28,029.70 - Step 4: Simplify right side
74,772.10x = 3,144,970,180.10 - Step 5: Solve for x
x = 3,144,970,180.10/74,772.10 - Step 6: Final answer
x = 42,060.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.