Finding the Fourth Proportional to 103,993.98, 143,511.70 and 56,247.32
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Solution
The fourth proportional to 103,993.98, 143,511.70 and 56,247.32 is: 77,621.31
Step by Step Solution
- Step 1: Write the proportion equation
103,993.98 : 143,511.70 = 56,247.32 : x - Step 2: Convert to fraction form
103,993.98/143,511.70 = 56,247.32/x - Step 3: Cross multiply
103,993.98x = 143,511.70 × 56,247.32 - Step 4: Simplify right side
103,993.98x = 8,072,149,039.08 - Step 5: Solve for x
x = 8,072,149,039.08/103,993.98 - Step 6: Final answer
x = 77,621.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.