Finding the Fourth Proportional to 74,593.53, 102,930.62 and 42,772.68
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Solution
The fourth proportional to 74,593.53, 102,930.62 and 42,772.68 is: 59,021.45
Step by Step Solution
- Step 1: Write the proportion equation
74,593.53 : 102,930.62 = 42,772.68 : x - Step 2: Convert to fraction form
74,593.53/102,930.62 = 42,772.68/x - Step 3: Cross multiply
74,593.53x = 102,930.62 × 42,772.68 - Step 4: Simplify right side
74,593.53x = 4,402,618,257.60 - Step 5: Solve for x
x = 4,402,618,257.60/74,593.53 - Step 6: Final answer
x = 59,021.45
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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.