Finding the Fourth Proportional to 105,617.61, 145,755.69 and 57,873.99
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Solution
The fourth proportional to 105,617.61, 145,755.69 and 57,873.99 is: 79,867.96
Step by Step Solution
- Step 1: Write the proportion equation
105,617.61 : 145,755.69 = 57,873.99 : x - Step 2: Convert to fraction form
105,617.61/145,755.69 = 57,873.99/x - Step 3: Cross multiply
105,617.61x = 145,755.69 × 57,873.99 - Step 4: Simplify right side
105,617.61x = 8,435,463,345.50 - Step 5: Solve for x
x = 8,435,463,345.50/105,617.61 - Step 6: Final answer
x = 79,867.96
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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.