Finding the Fourth Proportional to 93,939.21, 129,649.46 and 58,140.75
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Solution
The fourth proportional to 93,939.21, 129,649.46 and 58,140.75 is: 80,242.49
Step by Step Solution
- Step 1: Write the proportion equation
93,939.21 : 129,649.46 = 58,140.75 : x - Step 2: Convert to fraction form
93,939.21/129,649.46 = 58,140.75/x - Step 3: Cross multiply
93,939.21x = 129,649.46 × 58,140.75 - Step 4: Simplify right side
93,939.21x = 7,537,916,550.79 - Step 5: Solve for x
x = 7,537,916,550.79/93,939.21 - Step 6: Final answer
x = 80,242.49
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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.