Finding the Fourth Proportional to 74,668.12, 103,005.68 and 47,789.08
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Solution
The fourth proportional to 74,668.12, 103,005.68 and 47,789.08 is: 65,925.68
Step by Step Solution
- Step 1: Write the proportion equation
74,668.12 : 103,005.68 = 47,789.08 : x - Step 2: Convert to fraction form
74,668.12/103,005.68 = 47,789.08/x - Step 3: Cross multiply
74,668.12x = 103,005.68 × 47,789.08 - Step 4: Simplify right side
74,668.12x = 4,922,546,681.97 - Step 5: Solve for x
x = 4,922,546,681.97/74,668.12 - Step 6: Final answer
x = 65,925.68
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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.