Finding the Fourth Proportional to 75,574.62, 113,278.91 and 31,177.31
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Solution
The fourth proportional to 75,574.62, 113,278.91 and 31,177.31 is: 46,731.71
Step by Step Solution
- Step 1: Write the proportion equation
75,574.62 : 113,278.91 = 31,177.31 : x - Step 2: Convert to fraction form
75,574.62/113,278.91 = 31,177.31/x - Step 3: Cross multiply
75,574.62x = 113,278.91 × 31,177.31 - Step 4: Simplify right side
75,574.62x = 3,531,730,971.25 - Step 5: Solve for x
x = 3,531,730,971.25/75,574.62 - Step 6: Final answer
x = 46,731.71
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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.