Finding the Fourth Proportional to 80,974.80, 121,462.20 and 61,291.80
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Solution
The fourth proportional to 80,974.80, 121,462.20 and 61,291.80 is: 91,937.70
Step by Step Solution
- Step 1: Write the proportion equation
80,974.80 : 121,462.20 = 61,291.80 : x - Step 2: Convert to fraction form
80,974.80/121,462.20 = 61,291.80/x - Step 3: Cross multiply
80,974.80x = 121,462.20 × 61,291.80 - Step 4: Simplify right side
80,974.80x = 7,444,636,869.96 - Step 5: Solve for x
x = 7,444,636,869.96/80,974.80 - Step 6: Final answer
x = 91,937.70
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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.