Finding the Fourth Proportional to 84,865.84, 127,238.14 and 39,862.08
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Solution
The fourth proportional to 84,865.84, 127,238.14 and 39,862.08 is: 59,764.65
Step by Step Solution
- Step 1: Write the proportion equation
84,865.84 : 127,238.14 = 39,862.08 : x - Step 2: Convert to fraction form
84,865.84/127,238.14 = 39,862.08/x - Step 3: Cross multiply
84,865.84x = 127,238.14 × 39,862.08 - Step 4: Simplify right side
84,865.84x = 5,071,976,915.73 - Step 5: Solve for x
x = 5,071,976,915.73/84,865.84 - Step 6: Final answer
x = 59,764.65
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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.