Finding the Fourth Proportional to 74,170.17, 110,715.75 and 68,688.09
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Solution
The fourth proportional to 74,170.17, 110,715.75 and 68,688.09 is: 102,532.51
Step by Step Solution
- Step 1: Write the proportion equation
74,170.17 : 110,715.75 = 68,688.09 : x - Step 2: Convert to fraction form
74,170.17/110,715.75 = 68,688.09/x - Step 3: Cross multiply
74,170.17x = 110,715.75 × 68,688.09 - Step 4: Simplify right side
74,170.17x = 7,604,853,400.42 - Step 5: Solve for x
x = 7,604,853,400.42/74,170.17 - Step 6: Final answer
x = 102,532.51
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.