Finding the Fourth Proportional to 74,342.79, 102,593.13 and 40,351.28
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Solution
The fourth proportional to 74,342.79, 102,593.13 and 40,351.28 is: 55,684.80
Step by Step Solution
- Step 1: Write the proportion equation
74,342.79 : 102,593.13 = 40,351.28 : x - Step 2: Convert to fraction form
74,342.79/102,593.13 = 40,351.28/x - Step 3: Cross multiply
74,342.79x = 102,593.13 × 40,351.28 - Step 4: Simplify right side
74,342.79x = 4,139,763,601.74 - Step 5: Solve for x
x = 4,139,763,601.74/74,342.79 - Step 6: Final answer
x = 55,684.80
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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.