Finding the Fourth Proportional to 74,025.99, 102,158.49 and 42,189.75
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Solution
The fourth proportional to 74,025.99, 102,158.49 and 42,189.75 is: 58,223.35
Step by Step Solution
- Step 1: Write the proportion equation
74,025.99 : 102,158.49 = 42,189.75 : x - Step 2: Convert to fraction form
74,025.99/102,158.49 = 42,189.75/x - Step 3: Cross multiply
74,025.99x = 102,158.49 × 42,189.75 - Step 4: Simplify right side
74,025.99x = 4,310,041,153.48 - Step 5: Solve for x
x = 4,310,041,153.48/74,025.99 - Step 6: Final answer
x = 58,223.35
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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.