Finding the Fourth Proportional to 75,031.21, 103,483.28 and 63,738.09
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Solution
The fourth proportional to 75,031.21, 103,483.28 and 63,738.09 is: 87,907.77
Step by Step Solution
- Step 1: Write the proportion equation
75,031.21 : 103,483.28 = 63,738.09 : x - Step 2: Convert to fraction form
75,031.21/103,483.28 = 63,738.09/x - Step 3: Cross multiply
75,031.21x = 103,483.28 × 63,738.09 - Step 4: Simplify right side
75,031.21x = 6,595,826,614.14 - Step 5: Solve for x
x = 6,595,826,614.14/75,031.21 - Step 6: Final answer
x = 87,907.77
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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.