Finding the Fourth Proportional to 75,031.40, 112,547.10 and 68,907.80
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Solution
The fourth proportional to 75,031.40, 112,547.10 and 68,907.80 is: 103,361.70
Step by Step Solution
- Step 1: Write the proportion equation
75,031.40 : 112,547.10 = 68,907.80 : x - Step 2: Convert to fraction form
75,031.40/112,547.10 = 68,907.80/x - Step 3: Cross multiply
75,031.40x = 112,547.10 × 68,907.80 - Step 4: Simplify right side
75,031.40x = 7,755,373,057.38 - Step 5: Solve for x
x = 7,755,373,057.38/75,031.40 - Step 6: Final answer
x = 103,361.70
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1.5x scale
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.