Finding the Fourth Proportional to 74,507.28, 102,858.14 and 57,473.29
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Solution
The fourth proportional to 74,507.28, 102,858.14 and 57,473.29 is: 79,342.52
Step by Step Solution
- Step 1: Write the proportion equation
74,507.28 : 102,858.14 = 57,473.29 : x - Step 2: Convert to fraction form
74,507.28/102,858.14 = 57,473.29/x - Step 3: Cross multiply
74,507.28x = 102,858.14 × 57,473.29 - Step 4: Simplify right side
74,507.28x = 5,911,595,709.08 - Step 5: Solve for x
x = 5,911,595,709.08/74,507.28 - Step 6: Final answer
x = 79,342.52
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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.