Finding the Fourth Proportional to 78,475.16, 117,700.16 and 34,089.99
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Solution
The fourth proportional to 78,475.16, 117,700.16 and 34,089.99 is: 51,129.52
Step by Step Solution
- Step 1: Write the proportion equation
78,475.16 : 117,700.16 = 34,089.99 : x - Step 2: Convert to fraction form
78,475.16/117,700.16 = 34,089.99/x - Step 3: Cross multiply
78,475.16x = 117,700.16 × 34,089.99 - Step 4: Simplify right side
78,475.16x = 4,012,397,106.95 - Step 5: Solve for x
x = 4,012,397,106.95/78,475.16 - Step 6: Final answer
x = 51,129.52
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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.