Finding the Fourth Proportional to 81,282.04, 111,919.98 and 71,153.80
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Solution
The fourth proportional to 81,282.04, 111,919.98 and 71,153.80 is: 97,974.07
Step by Step Solution
- Step 1: Write the proportion equation
81,282.04 : 111,919.98 = 71,153.80 : x - Step 2: Convert to fraction form
81,282.04/111,919.98 = 71,153.80/x - Step 3: Cross multiply
81,282.04x = 111,919.98 × 71,153.80 - Step 4: Simplify right side
81,282.04x = 7,963,531,872.92 - Step 5: Solve for x
x = 7,963,531,872.92/81,282.04 - Step 6: Final answer
x = 97,974.07
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.