Finding the Fourth Proportional to 74,259.74, 102,478.97 and 40,268.43
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Solution
The fourth proportional to 74,259.74, 102,478.97 and 40,268.43 is: 55,570.72
Step by Step Solution
- Step 1: Write the proportion equation
74,259.74 : 102,478.97 = 40,268.43 : x - Step 2: Convert to fraction form
74,259.74/102,478.97 = 40,268.43/x - Step 3: Cross multiply
74,259.74x = 102,478.97 × 40,268.43 - Step 4: Simplify right side
74,259.74x = 4,126,667,330.59 - Step 5: Solve for x
x = 4,126,667,330.59/74,259.74 - Step 6: Final answer
x = 55,570.72
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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.