Finding the Fourth Proportional to 90,403.09, 124,858.40 and 61,673.42
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Solution
The fourth proportional to 90,403.09, 124,858.40 and 61,673.42 is: 85,178.99
Step by Step Solution
- Step 1: Write the proportion equation
90,403.09 : 124,858.40 = 61,673.42 : x - Step 2: Convert to fraction form
90,403.09/124,858.40 = 61,673.42/x - Step 3: Cross multiply
90,403.09x = 124,858.40 × 61,673.42 - Step 4: Simplify right side
90,403.09x = 7,700,443,845.18 - Step 5: Solve for x
x = 7,700,443,845.18/90,403.09 - Step 6: Final answer
x = 85,178.99
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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.