Finding the Fourth Proportional to 139,900.24, 209,788.62 and 40,037.70
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Solution
The fourth proportional to 139,900.24, 209,788.62 and 40,037.70 is: 60,038.88
Step by Step Solution
- Step 1: Write the proportion equation
139,900.24 : 209,788.62 = 40,037.70 : x - Step 2: Convert to fraction form
139,900.24/209,788.62 = 40,037.70/x - Step 3: Cross multiply
139,900.24x = 209,788.62 × 40,037.70 - Step 4: Simplify right side
139,900.24x = 8,399,453,830.97 - Step 5: Solve for x
x = 8,399,453,830.97/139,900.24 - Step 6: Final answer
x = 60,038.88
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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.