Finding the Fourth Proportional to 74,769.60, 112,197.60 and 28,027.20
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Solution
The fourth proportional to 74,769.60, 112,197.60 and 28,027.20 is: 42,056.99
Step by Step Solution
- Step 1: Write the proportion equation
74,769.60 : 112,197.60 = 28,027.20 : x - Step 2: Convert to fraction form
74,769.60/112,197.60 = 28,027.20/x - Step 3: Cross multiply
74,769.60x = 112,197.60 × 28,027.20 - Step 4: Simplify right side
74,769.60x = 3,144,584,574.72 - Step 5: Solve for x
x = 3,144,584,574.72/74,769.60 - Step 6: Final answer
x = 42,056.99
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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.