Finding the Fourth Proportional to 76,943.16, 106,181.12 and 42,949.68
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Solution
The fourth proportional to 76,943.16, 106,181.12 and 42,949.68 is: 59,270.31
Step by Step Solution
- Step 1: Write the proportion equation
76,943.16 : 106,181.12 = 42,949.68 : x - Step 2: Convert to fraction form
76,943.16/106,181.12 = 42,949.68/x - Step 3: Cross multiply
76,943.16x = 106,181.12 × 42,949.68 - Step 4: Simplify right side
76,943.16x = 4,560,445,126.04 - Step 5: Solve for x
x = 4,560,445,126.04/76,943.16 - Step 6: Final answer
x = 59,270.31
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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.