Finding the Fourth Proportional to 75,070.09, 112,638.09 and 28,312.03
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Solution
The fourth proportional to 75,070.09, 112,638.09 and 28,312.03 is: 42,480.48
Step by Step Solution
- Step 1: Write the proportion equation
75,070.09 : 112,638.09 = 28,312.03 : x - Step 2: Convert to fraction form
75,070.09/112,638.09 = 28,312.03/x - Step 3: Cross multiply
75,070.09x = 112,638.09 × 28,312.03 - Step 4: Simplify right side
75,070.09x = 3,189,013,230.19 - Step 5: Solve for x
x = 3,189,013,230.19/75,070.09 - Step 6: Final answer
x = 42,480.48
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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.