Finding the Fourth Proportional to 77,148.77, 115,618.05 and 47,173.50
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Solution
The fourth proportional to 77,148.77, 115,618.05 and 47,173.50 is: 70,695.99
Step by Step Solution
- Step 1: Write the proportion equation
77,148.77 : 115,618.05 = 47,173.50 : x - Step 2: Convert to fraction form
77,148.77/115,618.05 = 47,173.50/x - Step 3: Cross multiply
77,148.77x = 115,618.05 × 47,173.50 - Step 4: Simplify right side
77,148.77x = 5,454,108,081.68 - Step 5: Solve for x
x = 5,454,108,081.68/77,148.77 - Step 6: Final answer
x = 70,695.99
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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.