Finding the Fourth Proportional to 101,939.11, 140,671.18 and 56,620.01
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Solution
The fourth proportional to 101,939.11, 140,671.18 and 56,620.01 is: 78,132.95
Step by Step Solution
- Step 1: Write the proportion equation
101,939.11 : 140,671.18 = 56,620.01 : x - Step 2: Convert to fraction form
101,939.11/140,671.18 = 56,620.01/x - Step 3: Cross multiply
101,939.11x = 140,671.18 × 56,620.01 - Step 4: Simplify right side
101,939.11x = 7,964,803,618.31 - Step 5: Solve for x
x = 7,964,803,618.31/101,939.11 - Step 6: Final answer
x = 78,132.95
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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.