Finding the Fourth Proportional to 103,698.21, 155,567.66 and 47,539.70
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Solution
The fourth proportional to 103,698.21, 155,567.66 and 47,539.70 is: 71,318.88
Step by Step Solution
- Step 1: Write the proportion equation
103,698.21 : 155,567.66 = 47,539.70 : x - Step 2: Convert to fraction form
103,698.21/155,567.66 = 47,539.70/x - Step 3: Cross multiply
103,698.21x = 155,567.66 × 47,539.70 - Step 4: Simplify right side
103,698.21x = 7,395,639,886.10 - Step 5: Solve for x
x = 7,395,639,886.10/103,698.21 - Step 6: Final answer
x = 71,318.88
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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.