Finding the Fourth Proportional to 74,937.10, 112,405.65 and 74,499.70
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Solution
The fourth proportional to 74,937.10, 112,405.65 and 74,499.70 is: 111,749.55
Step by Step Solution
- Step 1: Write the proportion equation
74,937.10 : 112,405.65 = 74,499.70 : x - Step 2: Convert to fraction form
74,937.10/112,405.65 = 74,499.70/x - Step 3: Cross multiply
74,937.10x = 112,405.65 × 74,499.70 - Step 4: Simplify right side
74,937.10x = 8,374,187,203.31 - Step 5: Solve for x
x = 8,374,187,203.31/74,937.10 - Step 6: Final answer
x = 111,749.55
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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.