Finding the Fourth Proportional to 86,445.99, 129,637.78 and 36,529.94
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Solution
The fourth proportional to 86,445.99, 129,637.78 and 36,529.94 is: 54,781.72
Step by Step Solution
- Step 1: Write the proportion equation
86,445.99 : 129,637.78 = 36,529.94 : x - Step 2: Convert to fraction form
86,445.99/129,637.78 = 36,529.94/x - Step 3: Cross multiply
86,445.99x = 129,637.78 × 36,529.94 - Step 4: Simplify right side
86,445.99x = 4,735,660,325.13 - Step 5: Solve for x
x = 4,735,660,325.13/86,445.99 - Step 6: Final answer
x = 54,781.72
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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.