Finding the Fourth Proportional to 75,277.36, 112,916.12 and 19,121.68
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Solution
The fourth proportional to 75,277.36, 112,916.12 and 19,121.68 is: 28,682.54
Step by Step Solution
- Step 1: Write the proportion equation
75,277.36 : 112,916.12 = 19,121.68 : x - Step 2: Convert to fraction form
75,277.36/112,916.12 = 19,121.68/x - Step 3: Cross multiply
75,277.36x = 112,916.12 × 19,121.68 - Step 4: Simplify right side
75,277.36x = 2,159,145,913.48 - Step 5: Solve for x
x = 2,159,145,913.48/75,277.36 - Step 6: Final answer
x = 28,682.54
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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.