Finding the Fourth Proportional to 105,589.69, 145,713.95 and 57,841.99
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Solution
The fourth proportional to 105,589.69, 145,713.95 and 57,841.99 is: 79,822.04
Step by Step Solution
- Step 1: Write the proportion equation
105,589.69 : 145,713.95 = 57,841.99 : x - Step 2: Convert to fraction form
105,589.69/145,713.95 = 57,841.99/x - Step 3: Cross multiply
105,589.69x = 145,713.95 × 57,841.99 - Step 4: Simplify right side
105,589.69x = 8,428,384,838.76 - Step 5: Solve for x
x = 8,428,384,838.76/105,589.69 - Step 6: Final answer
x = 79,822.04
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.