Finding the Fourth Proportional to 74,720.70, 112,113.99 and 39,651.75
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Solution
The fourth proportional to 74,720.70, 112,113.99 and 39,651.75 is: 59,495.11
Step by Step Solution
- Step 1: Write the proportion equation
74,720.70 : 112,113.99 = 39,651.75 : x - Step 2: Convert to fraction form
74,720.70/112,113.99 = 39,651.75/x - Step 3: Cross multiply
74,720.70x = 112,113.99 × 39,651.75 - Step 4: Simplify right side
74,720.70x = 4,445,515,902.98 - Step 5: Solve for x
x = 4,445,515,902.98/74,720.70 - Step 6: Final answer
x = 59,495.11
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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.