Finding the Fourth Proportional to 68,023.15, 102,053.36 and 20,639.77
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Solution
The fourth proportional to 68,023.15, 102,053.36 and 20,639.77 is: 30,965.31
Step by Step Solution
- Step 1: Write the proportion equation
68,023.15 : 102,053.36 = 20,639.77 : x - Step 2: Convert to fraction form
68,023.15/102,053.36 = 20,639.77/x - Step 3: Cross multiply
68,023.15x = 102,053.36 × 20,639.77 - Step 4: Simplify right side
68,023.15x = 2,106,357,878.13 - Step 5: Solve for x
x = 2,106,357,878.13/68,023.15 - Step 6: Final answer
x = 30,965.31
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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.