Finding the Fourth Proportional to 74,289.64, 111,431.58 and 18,887.08
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Solution
The fourth proportional to 74,289.64, 111,431.58 and 18,887.08 is: 28,329.89
Step by Step Solution
- Step 1: Write the proportion equation
74,289.64 : 111,431.58 = 18,887.08 : x - Step 2: Convert to fraction form
74,289.64/111,431.58 = 18,887.08/x - Step 3: Cross multiply
74,289.64x = 111,431.58 × 18,887.08 - Step 4: Simplify right side
74,289.64x = 2,104,617,165.99 - Step 5: Solve for x
x = 2,104,617,165.99/74,289.64 - Step 6: Final answer
x = 28,329.89
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1.5x scale
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.