Finding the Fourth Proportional to 84,031.88, 115,963.76 and 46,306.12
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Solution
The fourth proportional to 84,031.88, 115,963.76 and 46,306.12 is: 63,902.32
Step by Step Solution
- Step 1: Write the proportion equation
84,031.88 : 115,963.76 = 46,306.12 : x - Step 2: Convert to fraction form
84,031.88/115,963.76 = 46,306.12/x - Step 3: Cross multiply
84,031.88x = 115,963.76 × 46,306.12 - Step 4: Simplify right side
84,031.88x = 5,369,831,786.21 - Step 5: Solve for x
x = 5,369,831,786.21/84,031.88 - Step 6: Final answer
x = 63,902.32
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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.