Finding the Fourth Proportional to 74,707.60, 112,122.60 and 74,124.40
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Solution
The fourth proportional to 74,707.60, 112,122.60 and 74,124.40 is: 111,247.32
Step by Step Solution
- Step 1: Write the proportion equation
74,707.60 : 112,122.60 = 74,124.40 : x - Step 2: Convert to fraction form
74,707.60/112,122.60 = 74,124.40/x - Step 3: Cross multiply
74,707.60x = 112,122.60 × 74,124.40 - Step 4: Simplify right side
74,707.60x = 8,311,020,451.44 - Step 5: Solve for x
x = 8,311,020,451.44/74,707.60 - Step 6: Final answer
x = 111,247.32
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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.