Finding the Fourth Proportional to 74,431.68, 102,709.76 and 42,593.28
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Solution
The fourth proportional to 74,431.68, 102,709.76 and 42,593.28 is: 58,775.32
Step by Step Solution
- Step 1: Write the proportion equation
74,431.68 : 102,709.76 = 42,593.28 : x - Step 2: Convert to fraction form
74,431.68/102,709.76 = 42,593.28/x - Step 3: Cross multiply
74,431.68x = 102,709.76 × 42,593.28 - Step 4: Simplify right side
74,431.68x = 4,374,745,566.41 - Step 5: Solve for x
x = 4,374,745,566.41/74,431.68 - Step 6: Final answer
x = 58,775.32
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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.