Finding the Fourth Proportional to 75,664.79, 104,424.69 and 42,130.79
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Solution
The fourth proportional to 75,664.79, 104,424.69 and 42,130.79 is: 58,144.54
Step by Step Solution
- Step 1: Write the proportion equation
75,664.79 : 104,424.69 = 42,130.79 : x - Step 2: Convert to fraction form
75,664.79/104,424.69 = 42,130.79/x - Step 3: Cross multiply
75,664.79x = 104,424.69 × 42,130.79 - Step 4: Simplify right side
75,664.79x = 4,399,494,163.08 - Step 5: Solve for x
x = 4,399,494,163.08/75,664.79 - Step 6: Final answer
x = 58,144.54
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1.5x scale
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.