Finding the Fourth Proportional to 75,271.48, 112,926.20 and 53,128.10
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Solution
The fourth proportional to 75,271.48, 112,926.20 and 53,128.10 is: 79,705.55
Step by Step Solution
- Step 1: Write the proportion equation
75,271.48 : 112,926.20 = 53,128.10 : x - Step 2: Convert to fraction form
75,271.48/112,926.20 = 53,128.10/x - Step 3: Cross multiply
75,271.48x = 112,926.20 × 53,128.10 - Step 4: Simplify right side
75,271.48x = 5,999,554,446.22 - Step 5: Solve for x
x = 5,999,554,446.22/75,271.48 - Step 6: Final answer
x = 79,705.55
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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.