Finding the Fourth Proportional to 75,231.60, 103,830.68 and 43,394.28
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Solution
The fourth proportional to 75,231.60, 103,830.68 and 43,394.28 is: 59,890.49
Step by Step Solution
- Step 1: Write the proportion equation
75,231.60 : 103,830.68 = 43,394.28 : x - Step 2: Convert to fraction form
75,231.60/103,830.68 = 43,394.28/x - Step 3: Cross multiply
75,231.60x = 103,830.68 × 43,394.28 - Step 4: Simplify right side
75,231.60x = 4,505,657,600.51 - Step 5: Solve for x
x = 4,505,657,600.51/75,231.60 - Step 6: Final answer
x = 59,890.49
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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.