Finding the Fourth Proportional to 74,734.80, 103,130.88 and 40,742.56
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Solution
The fourth proportional to 74,734.80, 103,130.88 and 40,742.56 is: 56,223.02
Step by Step Solution
- Step 1: Write the proportion equation
74,734.80 : 103,130.88 = 40,742.56 : x - Step 2: Convert to fraction form
74,734.80/103,130.88 = 40,742.56/x - Step 3: Cross multiply
74,734.80x = 103,130.88 × 40,742.56 - Step 4: Simplify right side
74,734.80x = 4,201,816,066.25 - Step 5: Solve for x
x = 4,201,816,066.25/74,734.80 - Step 6: Final answer
x = 56,223.02
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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.