Finding the Fourth Proportional to 72,665.71, 100,268.08 and 40,397.74
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Solution
The fourth proportional to 72,665.71, 100,268.08 and 40,397.74 is: 55,742.99
Step by Step Solution
- Step 1: Write the proportion equation
72,665.71 : 100,268.08 = 40,397.74 : x - Step 2: Convert to fraction form
72,665.71/100,268.08 = 40,397.74/x - Step 3: Cross multiply
72,665.71x = 100,268.08 × 40,397.74 - Step 4: Simplify right side
72,665.71x = 4,050,603,474.47 - Step 5: Solve for x
x = 4,050,603,474.47/72,665.71 - Step 6: Final answer
x = 55,742.99
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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.