Finding the Fourth Proportional to 68,979.93, 103,509.21 and 26,854.58
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Solution
The fourth proportional to 68,979.93, 103,509.21 and 26,854.58 is: 40,297.17
Step by Step Solution
- Step 1: Write the proportion equation
68,979.93 : 103,509.21 = 26,854.58 : x - Step 2: Convert to fraction form
68,979.93/103,509.21 = 26,854.58/x - Step 3: Cross multiply
68,979.93x = 103,509.21 × 26,854.58 - Step 4: Simplify right side
68,979.93x = 2,779,695,843.14 - Step 5: Solve for x
x = 2,779,695,843.14/68,979.93 - Step 6: Final answer
x = 40,297.17
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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.