Finding the Fourth Proportional to 71,407.31, 107,175.21 and 38,155.80
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Solution
The fourth proportional to 71,407.31, 107,175.21 and 38,155.80 is: 57,268.02
Step by Step Solution
- Step 1: Write the proportion equation
71,407.31 : 107,175.21 = 38,155.80 : x - Step 2: Convert to fraction form
71,407.31/107,175.21 = 38,155.80/x - Step 3: Cross multiply
71,407.31x = 107,175.21 × 38,155.80 - Step 4: Simplify right side
71,407.31x = 4,089,355,332.73 - Step 5: Solve for x
x = 4,089,355,332.73/71,407.31 - Step 6: Final answer
x = 57,268.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.