Finding the Fourth Proportional to 78,930.50, 118,392.18 and 29,006.99
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Solution
The fourth proportional to 78,930.50, 118,392.18 and 29,006.99 is: 43,509.17
Step by Step Solution
- Step 1: Write the proportion equation
78,930.50 : 118,392.18 = 29,006.99 : x - Step 2: Convert to fraction form
78,930.50/118,392.18 = 29,006.99/x - Step 3: Cross multiply
78,930.50x = 118,392.18 × 29,006.99 - Step 4: Simplify right side
78,930.50x = 3,434,200,354.76 - Step 5: Solve for x
x = 3,434,200,354.76/78,930.50 - Step 6: Final answer
x = 43,509.17
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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.