Finding the Fourth Proportional to 86,985.11, 120,037.41 and 51,177.44
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Solution
The fourth proportional to 86,985.11, 120,037.41 and 51,177.44 is: 70,623.66
Step by Step Solution
- Step 1: Write the proportion equation
86,985.11 : 120,037.41 = 51,177.44 : x - Step 2: Convert to fraction form
86,985.11/120,037.41 = 51,177.44/x - Step 3: Cross multiply
86,985.11x = 120,037.41 × 51,177.44 - Step 4: Simplify right side
86,985.11x = 6,143,206,747.84 - Step 5: Solve for x
x = 6,143,206,747.84/86,985.11 - Step 6: Final answer
x = 70,623.66
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1.5x scale
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.