Finding the Fourth Proportional to 75,612.74, 113,339.98 and 28,208.75
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Solution
The fourth proportional to 75,612.74, 113,339.98 and 28,208.75 is: 42,283.61
Step by Step Solution
- Step 1: Write the proportion equation
75,612.74 : 113,339.98 = 28,208.75 : x - Step 2: Convert to fraction form
75,612.74/113,339.98 = 28,208.75/x - Step 3: Cross multiply
75,612.74x = 113,339.98 × 28,208.75 - Step 4: Simplify right side
75,612.74x = 3,197,179,373.65 - Step 5: Solve for x
x = 3,197,179,373.65/75,612.74 - Step 6: Final answer
x = 42,283.61
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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.