Finding the Fourth Proportional to 77,155.21, 115,544.08 and 69,675.67
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Solution
The fourth proportional to 77,155.21, 115,544.08 and 69,675.67 is: 104,343.07
Step by Step Solution
- Step 1: Write the proportion equation
77,155.21 : 115,544.08 = 69,675.67 : x - Step 2: Convert to fraction form
77,155.21/115,544.08 = 69,675.67/x - Step 3: Cross multiply
77,155.21x = 115,544.08 × 69,675.67 - Step 4: Simplify right side
77,155.21x = 8,050,611,188.53 - Step 5: Solve for x
x = 8,050,611,188.53/77,155.21 - Step 6: Final answer
x = 104,343.07
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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.