Finding the Fourth Proportional to 77,686.61, 107,206.46 and 43,695.09
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Solution
The fourth proportional to 77,686.61, 107,206.46 and 43,695.09 is: 60,298.62
Step by Step Solution
- Step 1: Write the proportion equation
77,686.61 : 107,206.46 = 43,695.09 : x - Step 2: Convert to fraction form
77,686.61/107,206.46 = 43,695.09/x - Step 3: Cross multiply
77,686.61x = 107,206.46 × 43,695.09 - Step 4: Simplify right side
77,686.61x = 4,684,395,685.04 - Step 5: Solve for x
x = 4,684,395,685.04/77,686.61 - Step 6: Final answer
x = 60,298.62
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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.