Finding the Fourth Proportional to 75,398.09, 103,991.71 and 51,217.70
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Solution
The fourth proportional to 75,398.09, 103,991.71 and 51,217.70 is: 70,641.26
Step by Step Solution
- Step 1: Write the proportion equation
75,398.09 : 103,991.71 = 51,217.70 : x - Step 2: Convert to fraction form
75,398.09/103,991.71 = 51,217.70/x - Step 3: Cross multiply
75,398.09x = 103,991.71 × 51,217.70 - Step 4: Simplify right side
75,398.09x = 5,326,216,465.25 - Step 5: Solve for x
x = 5,326,216,465.25/75,398.09 - Step 6: Final answer
x = 70,641.26
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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.