Finding the Fourth Proportional to 74,156.26, 102,349.86 and 57,991.54
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Solution
The fourth proportional to 74,156.26, 102,349.86 and 57,991.54 is: 80,039.45
Step by Step Solution
- Step 1: Write the proportion equation
74,156.26 : 102,349.86 = 57,991.54 : x - Step 2: Convert to fraction form
74,156.26/102,349.86 = 57,991.54/x - Step 3: Cross multiply
74,156.26x = 102,349.86 × 57,991.54 - Step 4: Simplify right side
74,156.26x = 5,935,426,000.18 - Step 5: Solve for x
x = 5,935,426,000.18/74,156.26 - Step 6: Final answer
x = 80,039.45
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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.