Finding the Fourth Proportional to 103,419.46, 154,985.67 and 47,121.99
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Solution
The fourth proportional to 103,419.46, 154,985.67 and 47,121.99 is: 70,617.59
Step by Step Solution
- Step 1: Write the proportion equation
103,419.46 : 154,985.67 = 47,121.99 : x - Step 2: Convert to fraction form
103,419.46/154,985.67 = 47,121.99/x - Step 3: Cross multiply
103,419.46x = 154,985.67 × 47,121.99 - Step 4: Simplify right side
103,419.46x = 7,303,232,610.69 - Step 5: Solve for x
x = 7,303,232,610.69/103,419.46 - Step 6: Final answer
x = 70,617.59
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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.