Finding the Fourth Proportional to 75,417.87, 113,126.18 and 30,438.54
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Solution
The fourth proportional to 75,417.87, 113,126.18 and 30,438.54 is: 45,657.55
Step by Step Solution
- Step 1: Write the proportion equation
75,417.87 : 113,126.18 = 30,438.54 : x - Step 2: Convert to fraction form
75,417.87/113,126.18 = 30,438.54/x - Step 3: Cross multiply
75,417.87x = 113,126.18 × 30,438.54 - Step 4: Simplify right side
75,417.87x = 3,443,395,602.78 - Step 5: Solve for x
x = 3,443,395,602.78/75,417.87 - Step 6: Final answer
x = 45,657.55
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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.