Finding the Fourth Proportional to 74,911.80, 112,367.70 and 19,507.80
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Solution
The fourth proportional to 74,911.80, 112,367.70 and 19,507.80 is: 29,261.70
Step by Step Solution
- Step 1: Write the proportion equation
74,911.80 : 112,367.70 = 19,507.80 : x - Step 2: Convert to fraction form
74,911.80/112,367.70 = 19,507.80/x - Step 3: Cross multiply
74,911.80x = 112,367.70 × 19,507.80 - Step 4: Simplify right side
74,911.80x = 2,192,046,618.06 - Step 5: Solve for x
x = 2,192,046,618.06/74,911.80 - Step 6: Final answer
x = 29,261.70
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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.