Finding the Fourth Proportional to 75,076.08, 112,647.12 and 28,318.02
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Solution
The fourth proportional to 75,076.08, 112,647.12 and 28,318.02 is: 42,489.48
Step by Step Solution
- Step 1: Write the proportion equation
75,076.08 : 112,647.12 = 28,318.02 : x - Step 2: Convert to fraction form
75,076.08/112,647.12 = 28,318.02/x - Step 3: Cross multiply
75,076.08x = 112,647.12 × 28,318.02 - Step 4: Simplify right side
75,076.08x = 3,189,943,397.10 - Step 5: Solve for x
x = 3,189,943,397.10/75,076.08 - Step 6: Final answer
x = 42,489.48
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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.